diff --git a/arch/src/lib.rs b/arch/src/lib.rs
index 6e5f39d75f..a104902c55 100644
--- a/arch/src/lib.rs
+++ b/arch/src/lib.rs
@@ -1368,6 +1368,9 @@ pub struct SmbiosOptions {
     /// System product name.
     pub product_name: Option<String>,
 
+    /// System serial number (free-form string).
+    pub serial_number: Option<String>,
+
     /// Additional OEM strings to add to SMBIOS table.
     #[serde(default)]
     pub oem_strings: Vec<String>,
diff --git a/x86_64/src/smbios.rs b/x86_64/src/smbios.rs
index dc5ab11e40..90c58c63f1 100644
--- a/x86_64/src/smbios.rs
+++ b/x86_64/src/smbios.rs
@@ -237,6 +237,11 @@ pub fn setup_smbios(mem: &GuestMemory, options: &SmbiosOptions) -> Result<()> {
             handle,
             manufacturer: 1, // First string written in this section
             product_name: 2, // Second string written in this section
+            serial_number: if options.serial_number.is_some() {
+                3 // Third string written in this section
+            } else {
+                0 // Serial number not specified
+            },
             ..Default::default()
         };
         curptr = write_and_incr(mem, smbios_sysinfo, curptr)?;
@@ -256,6 +261,9 @@ pub fn setup_smbios(mem: &GuestMemory, options: &SmbiosOptions) -> Result<()> {
                 .unwrap_or(DEFAULT_SMBIOS_PRODUCT_NAME),
             curptr,
         )?;
+        if let Some(serial_number) = options.serial_number.as_deref() {
+            curptr = write_string(mem, serial_number, curptr)?;
+        }
         curptr = write_and_incr(mem, 0u8, curptr)?;
     }