diff --git a/mod.zig b/mod.zig
index 90588bae432312a7d8cdc6b7a47c714c007043b0..dbdc68abbe550874933c967094c02fbb966ffd41 100644
--- a/mod.zig
+++ b/mod.zig
@@ -334,7 +334,13 @@ pub const clone = @compileError("TODO: clone");
 // fork
 // pid_t fork(void);
 // asmlinkage long sys_fork(void);
-pub const fork = @compileError("TODO: fork");
+pub fn fork() errno.Error!pid_t {
+    const r = syscall0(.fork);
+    return switch (_errno(r)) {
+        .ok => @intCast(r),
+        _ => |c| errno.errorFromInt(@intFromEnum(c)),
+    };
+}
 
 // vfork
 // pid_t vfork(void);
diff --git a/test.zig b/test.zig
index 4ac00678f4935b29ac72f40847dd9b65a81e78fd..022f3355d132fff459230dc296eec86ed0520e19 100644
--- a/test.zig
+++ b/test.zig
@@ -10,4 +10,5 @@ test {
     _ = &linux.sched_yield;
     _ = &linux.pause;
     _ = &linux.getpid;
+    _ = &linux.fork;
 }