diff --git a/Cargo.lock b/Cargo.lock
index 6102ba1..9579989 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -235,6 +235,12 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "itoa"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -523,6 +529,43 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
+
+[[package]]
+name = "serde"
+version = "1.0.204"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc76f558e0cbb2a839d37354c575f1dc3fdc6546b5be373ba43d95f231bf7c12"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.204"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0cd7e117be63d3c3678776753929474f3b04a43a080c744d6b0ae2a8c28e222"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.120"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e0d21c9a8cae1235ad58a00c11cb40d4b1e5c784f1ef2c537876ed6ffd8b7c5"
+dependencies = [
+ "itoa",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "siphasher"
 version = "0.3.11"
@@ -541,6 +584,17 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
+[[package]]
+name = "syn"
+version = "2.0.58"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44cfb93f38070beee36b3fef7d4f5a16f27751d94b187b666a5cc5e9b0d30687"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "sysinfo"
 version = "0.30.13"
@@ -639,6 +693,8 @@ dependencies = [
  "rand",
  "regex",
  "rlimit",
+ "serde",
+ "serde_json",
  "tempfile",
  "textwrap",
  "uu_ctrlaltdel",
@@ -663,6 +719,8 @@ version = "0.0.1"
 dependencies = [
  "clap",
  "regex",
+ "serde",
+ "serde_json",
  "sysinfo",
  "uucore",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index e8ada22..45e8fa9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -46,6 +46,8 @@ textwrap = { version = "0.16.0", features = ["terminal_size"] }
 xattr = "1.3.1"
 tempfile = "3.9.0"
 rand = { version = "0.8", features = ["small_rng"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
 
 [dependencies]
 clap = { workspace = true }
@@ -54,7 +56,8 @@ clap_mangen = { workspace = true }
 uucore = { workspace = true }
 phf = { workspace = true }
 textwrap = { workspace = true }
-
+serde = { workspace = true }
+serde_json  = { workspace = true }
 
 #
 lscpu = { optional = true, version = "0.0.1", package = "uu_lscpu", path = "src/uu/lscpu" }
diff --git a/src/uu/lscpu/Cargo.toml b/src/uu/lscpu/Cargo.toml
index c59e07e..dff4b76 100644
--- a/src/uu/lscpu/Cargo.toml
+++ b/src/uu/lscpu/Cargo.toml
@@ -15,3 +15,5 @@ regex = { workspace = true }
 sysinfo = { workspace = true }
 uucore = { workspace = true }
 clap = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
diff --git a/src/uu/lscpu/src/lscpu.rs b/src/uu/lscpu/src/lscpu.rs
index 2faacf9..de0a211 100644
--- a/src/uu/lscpu/src/lscpu.rs
+++ b/src/uu/lscpu/src/lscpu.rs
@@ -3,32 +3,78 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-use clap::{crate_version, Command};
+use clap::{crate_version, Arg, ArgAction, Command};
 use regex::Regex;
-use std::fs;
+use serde::Serialize;
+use std::{fs, str::FromStr};
 use sysinfo::System;
 use uucore::{error::UResult, format_usage, help_about, help_usage};
 
+mod options {
+    pub const JSON: &str = "json";
+}
+
 const ABOUT: &str = help_about!("lscpu.md");
 const USAGE: &str = help_usage!("lscpu.md");
 
+#[derive(Serialize)]
+struct CpuInfos {
+    lscpu: Vec<CpuInfo>,
+}
+
+#[derive(Serialize)]
+struct CpuInfo {
+    field: String,
+    data: String,
+}
+
+impl CpuInfos {
+    fn new() -> CpuInfos {
+        CpuInfos {
+            lscpu: Vec::<CpuInfo>::new(),
+        }
+    }
+    fn push(&mut self, field: &str, data: &str) {
+        let cpu_info = CpuInfo {
+            field: String::from_str(field).unwrap(),
+            data: String::from_str(data).unwrap(),
+        };
+        self.lscpu.push(cpu_info);
+    }
+    fn to_json(&self) -> String {
+        serde_json::to_string_pretty(self).unwrap()
+    }
+}
+
 #[uucore::main]
 pub fn uumain(args: impl uucore::Args) -> UResult<()> {
-    let _matches: clap::ArgMatches = uu_app().try_get_matches_from(args)?;
+    let matches: clap::ArgMatches = uu_app().try_get_matches_from(args)?;
+
+    let json = matches.get_flag(options::JSON);
+
     let system = System::new_all();
     let _cpu = system.global_cpu_info();
 
-    println!("Architecture: {}", get_architecture());
-    println!("CPU(s): {}", system.cpus().len());
+    let mut cpu_infos = CpuInfos::new();
+    cpu_infos.push("Architecture", &get_architecture());
+    cpu_infos.push("CPU(s)", &format!("{}", system.cpus().len()));
     // Add more CPU information here...
 
     if let Ok(contents) = fs::read_to_string("/proc/cpuinfo") {
         let re = Regex::new(r"^model name\s+:\s+(.*)$").unwrap();
         // Assuming all CPUs have the same model name
         if let Some(cap) = re.captures_iter(&contents).next() {
-            println!("Model name: {}", &cap[1]);
+            cpu_infos.push("Model name", &cap[1]);
         };
     }
+
+    if json {
+        println!("{}", cpu_infos.to_json());
+    } else {
+        for elt in cpu_infos.lscpu {
+            println!("{}: {}", elt.field, elt.data);
+        }
+    }
     Ok(())
 }
 
@@ -48,4 +94,10 @@ pub fn uu_app() -> Command {
         .about(ABOUT)
         .override_usage(format_usage(USAGE))
         .infer_long_args(true)
+        .arg(
+            Arg::new(options::JSON)
+                .long("json")
+                .help("Use JSON output format for the default summary or extended output (see --extended). For backward compatibility, JSON output follows the default summary behavior for non-terminals (e.g., pipes) where subsections are missing. See also --hierarchic.")
+                .action(ArgAction::SetTrue),
+        )
 }
diff --git a/tests/by-util/test_lscpu.rs b/tests/by-util/test_lscpu.rs
index 7ca9b77..852198c 100644
--- a/tests/by-util/test_lscpu.rs
+++ b/tests/by-util/test_lscpu.rs
@@ -4,9 +4,18 @@
 // file that was distributed with this source code.
 
 use crate::common::util::TestScenario;
+use serde_json::{self, Value};
 
 #[test]
 #[ignore]
 fn test_invalid_arg() {
     new_ucmd!().arg("--definitely-invalid").fails().code_is(1);
 }
+
+#[test]
+fn test_json() {
+    let result = new_ucmd!().arg("--json").succeeds();
+    let stdout_bytes = result.stdout();
+    let res: Result<Value, _> = serde_json::from_slice(&stdout_bytes);
+    assert!(res.is_ok(), "invalid json output");
+}