diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 64e778be9..35c55d4c6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -155,39 +155,6 @@ jobs:
           --artifacts target/artifacts \
           --rust-wit-bindgen-path ./crates/guest-rust
 
-  # While threading is off-by-default and toolchains are percolating this is a
-  # separate job to get configured slightly differently.
-  threading:
-    name: Test WASIp3 Threading (allowed to fail)
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-      with:
-        submodules: true
-
-    - name: Install Rust
-      run: rustup update stable --no-self-update && rustup default stable
-    - run: rustup target add wasm32-wasip2
-
-    - uses: ./.github/actions/install-wasi-sdk
-
-    # The threading builtins are encoded with a canonical-function opcode
-    # newer than any released wasmtime understands (46.0.1 and 47.0.2 both
-    # reject it with "invalid leading byte (0x2d) for canonical function"),
-    # so this job runs wasmtime's `dev` build instead of the pinned release.
-    # This can go back to the shared pin once a release parses the encoding.
-    - name: Install wasmtime dev build
-      run: |
-        curl --retry 5 --retry-all-errors -L -o wasmtime-dev.tar.xz https://github.com/bytecodealliance/wasmtime/releases/download/dev/wasmtime-dev-x86_64-linux.tar.xz
-        tar xJf wasmtime-dev.tar.xz
-        echo "`pwd`/wasmtime-dev-x86_64-linux" >> $GITHUB_PATH
-      working-directory: ${{ runner.temp }}
-
-    - run: |
-        cargo run test --languages rust,c,go tests/threading \
-          --artifacts target/artifacts \
-          --rust-wit-bindgen-path ./crates/guest-rust
-
   test_unit:
     name: Crate Unit Tests
     runs-on: ubuntu-latest
diff --git a/tests/threading/threading-builtins/runner.c b/tests/threading/threading-builtins/runner.c
deleted file mode 100644
index ab4805c8f..000000000
--- a/tests/threading/threading-builtins/runner.c
+++ /dev/null
@@ -1,22 +0,0 @@
-//@ args = '--rename a:b/i=test --async=-run'
-//@ wasmtime-flags = '-Wcomponent-model-async -Wcomponent-model-threading -Wcomponent-model-async-stackful'
-
-#include <assert.h>
-#include <runner.h>
-
-void exports_runner_run()
-{
-    runner_subtask_status_t status = test_f();
-    assert(RUNNER_SUBTASK_STATE(status) == RUNNER_SUBTASK_STARTED);
-    runner_subtask_t task = RUNNER_SUBTASK_HANDLE(status);
-
-    runner_waitable_set_t set = runner_waitable_set_new();
-    runner_waitable_join(task, set);
-    runner_event_t event;
-    runner_waitable_set_wait(set, &event);
-    assert(event.event == RUNNER_EVENT_SUBTASK);
-    assert(event.waitable == task);
-    assert(event.code == RUNNER_SUBTASK_RETURNED);
-    runner_waitable_join(task, 0);
-    runner_waitable_set_drop(set);
-}
diff --git a/tests/threading/threading-builtins/test.c b/tests/threading/threading-builtins/test.c
deleted file mode 100644
index b9baa2092..000000000
--- a/tests/threading/threading-builtins/test.c
+++ /dev/null
@@ -1,57 +0,0 @@
-//@ args = '--rename a:b/i=test --generate-threading-helpers'
-//@ [lang]
-//@ cflags = "-O2"
-//@ ldflags = "-Wl,--export-table"
-
-#include <assert.h>
-#include <stdio.h>
-#include <test.h>
-
-test_subtask_status_t exports_test_f() { return TEST_CALLBACK_CODE_YIELD; }
-
-uint32_t main_tid = 0;
-uint32_t spawned_tid = 0;
-
-void thread_start(void *arg) {
-  // Call all the threading builtins; the main thread will do the right thing
-  // to resume us.
-  test_thread_yield();
-  test_thread_yield_cancellable();
-  test_thread_suspend();
-  test_thread_suspend_cancellable();
-  test_thread_yield_then_resume(main_tid);
-  test_thread_yield_then_resume_cancellable(main_tid);
-  test_thread_yield_then_promote(main_tid);
-  test_thread_yield_then_promote_cancellable(main_tid);
-  test_thread_suspend_then_resume(main_tid);
-  test_thread_suspend_then_resume_cancellable(main_tid);
-  test_thread_suspend_then_promote(main_tid);
-  test_thread_suspend_then_promote_cancellable(main_tid);
-  test_thread_resume_later(main_tid);
-}
-
-test_subtask_status_t exports_test_f_callback(test_event_t *event) {
-  assert(event->event == TEST_EVENT_NONE);
-  assert(event->waitable == 0);
-  assert(event->code == 0);
-  main_tid = test_thread_index();
-  spawned_tid = test_thread_new_indirect(thread_start, &main_tid);
-
-  // Now drive the other thread to completion by switching/yielding to it
-  test_thread_yield_then_resume(spawned_tid);   // other yields
-  test_thread_yield();                          // other yields
-  test_thread_yield();                          // other suspends
-  test_thread_yield_then_resume(spawned_tid);   // other suspends
-  test_thread_suspend_then_resume(spawned_tid); // other yields to me
-  test_thread_suspend();                        // other yields to me
-  test_thread_suspend();                        // other yields to me
-  test_thread_suspend();                        // other yields to me
-  test_thread_suspend();                        // other suspends to me
-  test_thread_suspend_then_resume(spawned_tid); // other suspends to me
-  test_thread_suspend_then_resume(spawned_tid); // other suspends to me
-  test_thread_suspend_then_resume(spawned_tid); // other suspends to me
-  test_thread_suspend_then_resume(
-      spawned_tid); // other unsuspends me and terminates
-  exports_test_f_return();
-  return TEST_CALLBACK_CODE_EXIT;
-}
diff --git a/tests/threading/threading-builtins/test.wit b/tests/threading/threading-builtins/test.wit
deleted file mode 100644
index 378d915eb..000000000
--- a/tests/threading/threading-builtins/test.wit
+++ /dev/null
@@ -1,15 +0,0 @@
-package a:b;
-
-interface i {
-  f: async func();
-}
-
-world test {
-  export i;
-}
-
-world runner {
-  import i;
-
-  export run: async func();
-}