diff --git a/src/xenia/kernel/modules/xboxkrnl/objects/xthread.cc b/src/xenia/kernel/modules/xboxkrnl/objects/xthread.cc
index d6b1ef077..2a772a8de 100644
--- a/src/xenia/kernel/modules/xboxkrnl/objects/xthread.cc
+++ b/src/xenia/kernel/modules/xboxkrnl/objects/xthread.cc
@@ -348,3 +348,29 @@ uint32_t XThread::RaiseIrql(uint32_t new_irql) {
 void XThread::LowerIrql(uint32_t new_irql) {
   irql_ = new_irql;
 }
+
+X_STATUS XThread::Delay(
+  uint32_t processor_mode, uint32_t alertable, uint64_t interval) {
+  int64_t timeout_ticks = interval;
+  DWORD timeout_ms;
+  if (timeout_ticks > 0) {
+    // Absolute time, based on January 1, 1601.
+    // TODO(benvanik): convert time to relative time.
+    XEASSERTALWAYS();
+    timeout_ms = 0;
+  } else if (timeout_ticks < 0) {
+    // Relative time.
+    timeout_ms = (DWORD)(-timeout_ticks / 10000); // Ticks -> MS
+  } else {
+    timeout_ms = 0;
+  }
+  DWORD result = SleepEx(timeout_ms, alertable ? TRUE : FALSE);
+  switch (result) {
+  case 0:
+    return X_STATUS_SUCCESS;
+  case WAIT_IO_COMPLETION:
+    return X_STATUS_USER_APC;
+  default:
+    return X_STATUS_ALERTED;
+  }
+}
diff --git a/src/xenia/kernel/modules/xboxkrnl/objects/xthread.h b/src/xenia/kernel/modules/xboxkrnl/objects/xthread.h
index c83d4fe51..17359a966 100644
--- a/src/xenia/kernel/modules/xboxkrnl/objects/xthread.h
+++ b/src/xenia/kernel/modules/xboxkrnl/objects/xthread.h
@@ -61,6 +61,9 @@ public:
   uint32_t RaiseIrql(uint32_t new_irql);
   void LowerIrql(uint32_t new_irql);
 
+  X_STATUS Delay(
+      uint32_t processor_mode, uint32_t alertable, uint64_t interval);
+
 private:
   X_STATUS PlatformCreate();
   void PlatformDestroy();
diff --git a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_threading.cc b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_threading.cc
index 67922c3d6..ed724a1cb 100644
--- a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_threading.cc
+++ b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_threading.cc
@@ -205,6 +205,31 @@ SHIM_CALL KeQueryPerformanceFrequency_shim(
 }
 
 
+X_STATUS xeKeDelayExecutionThread(
+    uint32_t processor_mode, uint32_t alertable, uint64_t interval) {
+  XThread* thread = XThread::GetCurrentThread();
+  return thread->Delay(processor_mode, alertable, interval);
+}
+
+
+SHIM_CALL KeDelayExecutionThread_shim(
+    xe_ppc_state_t* ppc_state, KernelState* state) {
+  uint32_t processor_mode = SHIM_GET_ARG_32(0);
+  uint32_t alertable = SHIM_GET_ARG_32(1);
+  uint32_t interval_ptr = SHIM_GET_ARG_32(2);
+  uint64_t interval = SHIM_MEM_64(interval_ptr);
+
+  XELOGD(
+    "KeDelayExecutionThread(%.8X, %d, %.8X(%.16llX)",
+    processor_mode, alertable, interval_ptr, interval);
+
+  X_STATUS result = xeKeDelayExecutionThread(
+      processor_mode, alertable, interval);
+
+  SHIM_SET_RETURN(result);
+}
+
+
 void xeKeQuerySystemTime(uint64_t* time_ptr) {
   FILETIME t;
   GetSystemTimeAsFileTime(&t);
@@ -654,6 +679,7 @@ void xe::kernel::xboxkrnl::RegisterThreadingExports(
   SHIM_SET_MAPPING("xboxkrnl.exe", KeGetCurrentProcessType, state);
 
   SHIM_SET_MAPPING("xboxkrnl.exe", KeQueryPerformanceFrequency, state);
+  SHIM_SET_MAPPING("xboxkrnl.exe", KeDelayExecutionThread, state);
   SHIM_SET_MAPPING("xboxkrnl.exe", KeQuerySystemTime, state);
 
   SHIM_SET_MAPPING("xboxkrnl.exe", KeTlsAlloc, state);
diff --git a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_threading.h b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_threading.h
index afa962dd6..68e22f628 100644
--- a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_threading.h
+++ b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_threading.h
@@ -33,6 +33,9 @@ uint32_t xeKeGetCurrentProcessType();
 uint64_t xeKeQueryPerformanceFrequency();
 void xeKeQuerySystemTime(uint64_t* time_ptr);
 
+X_STATUS xeKeDelayExecutionThread(
+    uint32_t processor_mode, uint32_t alertable, uint64_t interval);
+
 uint32_t xeKeTlsAlloc();
 int KeTlsFree(uint32_t tls_index);
 uint64_t xeKeTlsGetValue(uint32_t tls_index);