diff --git a/libc-test/semver/apple.txt b/libc-test/semver/apple.txt
index 7b11ad7c66ebd..07ac437f6d10b 100644
--- a/libc-test/semver/apple.txt
+++ b/libc-test/semver/apple.txt
@@ -1786,6 +1786,7 @@ __PTHREAD_RWLOCKATTR_SIZE__
 __PTHREAD_RWLOCK_SIZE__
 __darwin_mcontext64
 __error
+_opaque_pthread_t
 abs
 acct
 aio_cancel
diff --git a/src/unix/bsd/mod.rs b/src/unix/bsd/mod.rs
index 37ef0f0d81ed1..80da4896f3c13 100644
--- a/src/unix/bsd/mod.rs
+++ b/src/unix/bsd/mod.rs
@@ -5,7 +5,21 @@ pub type useconds_t = u32;
 pub type blkcnt_t = i64;
 pub type socklen_t = u32;
 pub type sa_family_t = u8;
-pub type pthread_t = crate::uintptr_t;
+
+cfg_if! {
+    if #[cfg(target_vendor = "apple")] {
+        extern_ty! {
+            pub enum _opaque_pthread_t {}
+        }
+
+        type __darwin_pthread_t = *mut _opaque_pthread_t;
+        pub type pthread_t = __darwin_pthread_t;
+    } else {
+        // FIXME(1.0): verify other BSDs? Glancing around, other BSDs also look like a pointer
+        pub type pthread_t = crate::uintptr_t;
+    }
+}
+
 pub type nfds_t = c_uint;
 pub type regoff_t = off_t;