diff --git a/Cargo.lock b/Cargo.lock
index d2cf4d7af..4f1786416 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3930,6 +3930,7 @@ dependencies = [
  "bigdecimal",
  "binary-heap-plus",
  "clap",
+ "codspeed-divan-compat",
  "compare",
  "ctrlc",
  "fluent",
diff --git a/src/uu/sort/Cargo.toml b/src/uu/sort/Cargo.toml
index 789f6fec5..816e42d20 100644
--- a/src/uu/sort/Cargo.toml
+++ b/src/uu/sort/Cargo.toml
@@ -40,6 +40,21 @@ fluent = { workspace = true }
 [target.'cfg(target_os = "linux")'.dependencies]
 nix = { workspace = true }
 
+[dev-dependencies]
+divan = { workspace = true }
+tempfile = { workspace = true }
+uucore = { workspace = true, features = [
+  "benchmark",
+  "fs",
+  "parser",
+  "version-cmp",
+  "i18n-collator",
+] }
+
 [[bin]]
 name = "sort"
 path = "src/main.rs"
+
+[[bench]]
+name = "sort_bench"
+harness = false
diff --git a/src/uu/sort/benches/sort_bench.rs b/src/uu/sort/benches/sort_bench.rs
new file mode 100644
index 000000000..6270339a0
--- /dev/null
+++ b/src/uu/sort/benches/sort_bench.rs
@@ -0,0 +1,306 @@
+// This file is part of the uutils coreutils package.
+//
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
+use divan::{Bencher, black_box};
+use std::path::PathBuf;
+use uu_sort::uumain;
+use uucore::benchmark::{create_test_file, run_util_function};
+
+/// Helper function to generate test data from a list of words
+fn generate_data_from_words(words: &[&str], num_lines: usize) -> Vec<u8> {
+    let mut data = Vec::new();
+    for i in 0..num_lines {
+        let word = words[i % words.len()];
+        let number = i % 1000;
+        data.extend_from_slice(format!("{word}_{number:03}\n").as_bytes());
+    }
+    data
+}
+
+/// Helper function to generate test data from a list of words without number suffix
+fn generate_data_from_words_simple(words: &[&str], num_lines: usize) -> Vec<u8> {
+    let mut data = Vec::new();
+    for i in 0..num_lines {
+        let word = words[i % words.len()];
+        data.extend_from_slice(format!("{word}\n").as_bytes());
+    }
+    data
+}
+
+/// Generate test data with ASCII-only text
+fn generate_ascii_data(num_lines: usize) -> Vec<u8> {
+    let words = [
+        "apple",
+        "banana",
+        "cherry",
+        "date",
+        "elderberry",
+        "fig",
+        "grape",
+        "honeydew",
+        "kiwi",
+        "lemon",
+        "mango",
+        "nectarine",
+        "orange",
+        "papaya",
+        "quince",
+        "raspberry",
+        "strawberry",
+        "tangerine",
+        "ugli",
+        "vanilla",
+        "watermelon",
+        "xigua",
+        "yellow",
+        "zucchini",
+        "avocado",
+    ];
+
+    generate_data_from_words(&words, num_lines)
+}
+
+/// Generate test data with accented characters that require locale-aware sorting
+fn generate_accented_data(num_lines: usize) -> Vec<u8> {
+    let words = [
+        // French words with accents
+        "café",
+        "naïve",
+        "résumé",
+        "fiancé",
+        "crème",
+        "déjà",
+        "façade",
+        "château",
+        "élève",
+        "côte",
+        // German words with umlauts
+        "über",
+        "Müller",
+        "schön",
+        "Köln",
+        "Düsseldorf",
+        "Österreich",
+        "Zürich",
+        "Mädchen",
+        "Bär",
+        "größer",
+        // Spanish words with tildes and accents
+        "niño",
+        "señor",
+        "año",
+        "mañana",
+        "español",
+        "corazón",
+        "María",
+        "José",
+        "más",
+        "también",
+    ];
+
+    generate_data_from_words(&words, num_lines)
+}
+
+/// Generate test data with mixed ASCII and non-ASCII characters
+fn generate_mixed_data(num_lines: usize) -> Vec<u8> {
+    let words = [
+        // Mix of ASCII and accented words
+        "apple",
+        "café",
+        "banana",
+        "naïve",
+        "cherry",
+        "résumé",
+        "date",
+        "fiancé",
+        "elderberry",
+        "crème",
+        "über",
+        "grape",
+        "Müller",
+        "honeydew",
+        "schön",
+        "niño",
+        "kiwi",
+        "señor",
+        "lemon",
+        "año",
+        "mango",
+        "María",
+        "orange",
+        "José",
+        "papaya",
+    ];
+
+    generate_data_from_words(&words, num_lines)
+}
+
+/// Generate test data with uppercase/lowercase variations
+fn generate_case_sensitive_data(num_lines: usize) -> Vec<u8> {
+    let base_words = [
+        "apple", "Apple", "APPLE", "banana", "Banana", "BANANA", "café", "Café", "CAFÉ", "über",
+        "Über", "ÜBER",
+    ];
+
+    generate_data_from_words_simple(&base_words, num_lines)
+}
+
+fn setup_test_file(data: &[u8]) -> PathBuf {
+    let temp_dir = tempfile::tempdir().unwrap();
+    let file_path = create_test_file(data, temp_dir.path());
+    // Keep temp_dir alive by leaking it - the OS will clean it up
+    std::mem::forget(temp_dir);
+    file_path
+}
+
+/// Benchmark sorting ASCII-only data
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_ascii_only(bencher: Bencher, num_lines: usize) {
+    let data = generate_ascii_data(num_lines);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark sorting accented/non-ASCII data
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_accented_data(bencher: Bencher, num_lines: usize) {
+    let data = generate_accented_data(num_lines);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark sorting mixed ASCII/non-ASCII data
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_mixed_data(bencher: Bencher, num_lines: usize) {
+    let data = generate_mixed_data(num_lines);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark case-sensitive sorting with mixed case data
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_case_sensitive(bencher: Bencher, num_lines: usize) {
+    let data = generate_case_sensitive_data(num_lines);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark case-insensitive sorting (fold case)
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_case_insensitive(bencher: Bencher, num_lines: usize) {
+    let data = generate_case_sensitive_data(num_lines);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        black_box(run_util_function(
+            uumain,
+            &["-f", file_path.to_str().unwrap()],
+        ));
+    });
+}
+
+/// Benchmark dictionary order sorting (only blanks and alphanumeric)
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_dictionary_order(bencher: Bencher, num_lines: usize) {
+    let data = generate_mixed_data(num_lines);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        black_box(run_util_function(
+            uumain,
+            &["-d", file_path.to_str().unwrap()],
+        ));
+    });
+}
+
+/// Benchmark numeric sorting with mixed data
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_numeric(bencher: Bencher, num_lines: usize) {
+    let mut data = Vec::new();
+
+    // Generate numeric data with some text prefixes
+    for i in 0..num_lines {
+        let value = (i * 13) % 10000; // Pseudo-random numeric values
+        data.extend_from_slice(format!("value_{value}\n").as_bytes());
+    }
+
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        black_box(run_util_function(
+            uumain,
+            &["-n", file_path.to_str().unwrap()],
+        ));
+    });
+}
+
+/// Benchmark reverse sorting with locale-aware data
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_reverse_locale(bencher: Bencher, num_lines: usize) {
+    let data = generate_accented_data(num_lines);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        black_box(run_util_function(
+            uumain,
+            &["-r", file_path.to_str().unwrap()],
+        ));
+    });
+}
+
+/// Benchmark sorting with specific key field
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_key_field(bencher: Bencher, num_lines: usize) {
+    let mut data = Vec::new();
+
+    // Generate data with multiple fields
+    let words = ["café", "naïve", "apple", "über", "banana"];
+    for i in 0..num_lines {
+        let word = words[i % words.len()];
+        let num1 = i % 100;
+        let num2 = (i * 7) % 100;
+        data.extend_from_slice(format!("{num1}\t{word}\t{num2}\n").as_bytes());
+    }
+
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        // Sort by second field
+        black_box(run_util_function(
+            uumain,
+            &["-k", "2", file_path.to_str().unwrap()],
+        ));
+    });
+}
+
+/// Benchmark unique sorting with locale-aware data
+#[divan::bench(args = [100_000, 500_000])]
+fn sort_unique_locale(bencher: Bencher, num_lines: usize) {
+    let data = generate_accented_data(num_lines);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        black_box(run_util_function(
+            uumain,
+            &["-u", file_path.to_str().unwrap()],
+        ));
+    });
+}
+
+fn main() {
+    divan::main();
+}
diff --git a/src/uu/sort/benches/sort_locale_bench.rs b/src/uu/sort/benches/sort_locale_bench.rs
new file mode 100644
index 000000000..6b925ae78
--- /dev/null
+++ b/src/uu/sort/benches/sort_locale_bench.rs
@@ -0,0 +1,231 @@
+// This file is part of the uutils coreutils package.
+//
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
+use divan::{Bencher, black_box};
+use std::env;
+use std::path::PathBuf;
+use uu_sort::uumain;
+use uucore::benchmark::{create_test_file, run_util_function};
+
+/// Helper function to generate test data from a list of words
+fn generate_data_from_words_with_counter(words: &[&str], num_lines: usize) -> Vec<u8> {
+    let mut data = Vec::new();
+    for i in 0..num_lines {
+        let word = words[i % words.len()];
+        let line = format!("{word}{i:04}\n");
+        data.extend_from_slice(line.as_bytes());
+    }
+    data
+}
+
+fn generate_ascii_data(num_lines: usize) -> Vec<u8> {
+    let mut data = Vec::new();
+    for i in 0..num_lines {
+        let line = format!("line_{:06}\n", (num_lines - i - 1));
+        data.extend_from_slice(line.as_bytes());
+    }
+    data
+}
+
+fn generate_mixed_locale_data(num_lines: usize) -> Vec<u8> {
+    let mixed_strings = [
+        "zebra", "äpfel", "banana", "öl", "cat", "über", "dog", "zürich", "elephant", "café",
+        "fish", "naïve", "grape", "résumé", "house", "piñata",
+    ];
+    generate_data_from_words_with_counter(&mixed_strings, num_lines)
+}
+
+fn generate_german_locale_data(num_lines: usize) -> Vec<u8> {
+    let german_words = [
+        "Ärger", "Öffnung", "Über", "Zucker", "Bär", "Föhn", "Größe", "Höhe", "Käse", "Löwe",
+        "Mädchen", "Nüsse", "Röntgen", "Schäfer", "Tür", "Würfel", "ä", "ö", "ü", "ß", "a", "o",
+        "u", "s",
+    ];
+    generate_data_from_words_with_counter(&german_words, num_lines)
+}
+
+fn generate_random_strings(num_lines: usize, length: usize) -> Vec<u8> {
+    let mut data = Vec::new();
+    let charset =
+        "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789äöüÄÖÜßéèêëàâîïôûç";
+    let charset_bytes = charset.as_bytes();
+
+    for i in 0..num_lines {
+        let mut line = String::new();
+        for j in 0..length {
+            let idx = ((i * length + j) * 17 + 42) % charset_bytes.len();
+            line.push(charset_bytes[idx] as char);
+        }
+        line.push('\n');
+        data.extend_from_slice(line.as_bytes());
+    }
+    data
+}
+
+fn setup_test_file(data: &[u8]) -> PathBuf {
+    let temp_dir = tempfile::tempdir().unwrap();
+    let file_path = create_test_file(data, temp_dir.path());
+    // Keep temp_dir alive by leaking it - the OS will clean it up
+    std::mem::forget(temp_dir);
+    file_path
+}
+
+/// Benchmark ASCII-only data sorting with C locale (byte comparison)
+#[divan::bench]
+fn sort_ascii_c_locale(bencher: Bencher) {
+    let temp_dir = tempfile::tempdir().unwrap();
+    let data = generate_ascii_data(100_000);
+    let file_path = create_test_file(&data, temp_dir.path());
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "C");
+        }
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark ASCII-only data sorting with UTF-8 locale
+#[divan::bench]
+fn sort_ascii_utf8_locale(bencher: Bencher) {
+    let data = generate_ascii_data(10_000);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "en_US.UTF-8");
+        }
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark mixed ASCII/Unicode data with C locale
+#[divan::bench]
+fn sort_mixed_c_locale(bencher: Bencher) {
+    let data = generate_mixed_locale_data(10_000);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "C");
+        }
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark mixed ASCII/Unicode data with UTF-8 locale
+#[divan::bench]
+fn sort_mixed_utf8_locale(bencher: Bencher) {
+    let data = generate_mixed_locale_data(10_000);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "en_US.UTF-8");
+        }
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark German locale-specific data with C locale
+#[divan::bench]
+fn sort_german_c_locale(bencher: Bencher) {
+    let data = generate_german_locale_data(10_000);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "C");
+        }
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark German locale-specific data with German locale
+#[divan::bench]
+fn sort_german_locale(bencher: Bencher) {
+    let data = generate_german_locale_data(10_000);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "de_DE.UTF-8");
+        }
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark random strings of different lengths
+#[divan::bench]
+fn sort_random_strings(bencher: Bencher) {
+    let data = generate_random_strings(10_000, 50);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "en_US.UTF-8");
+        }
+        black_box(run_util_function(uumain, &[file_path.to_str().unwrap()]));
+    });
+}
+
+/// Benchmark numeric sorting performance
+#[divan::bench]
+fn sort_numeric(bencher: Bencher) {
+    let mut data = Vec::new();
+    for i in 0..10_000 {
+        let line = format!("{}\n", 10_000 - i);
+        data.extend_from_slice(line.as_bytes());
+    }
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "en_US.UTF-8");
+        }
+        black_box(run_util_function(
+            uumain,
+            &["-n", file_path.to_str().unwrap()],
+        ));
+    });
+}
+
+/// Benchmark reverse sorting
+#[divan::bench]
+fn sort_reverse_mixed(bencher: Bencher) {
+    let data = generate_mixed_locale_data(10_000);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "en_US.UTF-8");
+        }
+        black_box(run_util_function(
+            uumain,
+            &["-r", file_path.to_str().unwrap()],
+        ));
+    });
+}
+
+/// Benchmark unique sorting
+#[divan::bench]
+fn sort_unique_mixed(bencher: Bencher) {
+    let data = generate_mixed_locale_data(10_000);
+    let file_path = setup_test_file(&data);
+
+    bencher.bench(|| {
+        unsafe {
+            env::set_var("LC_ALL", "en_US.UTF-8");
+        }
+        black_box(run_util_function(
+            uumain,
+            &["-u", file_path.to_str().unwrap()],
+        ));
+    });
+}
+
+fn main() {
+    divan::main();
+}