--- a/source/common/thread/terminate_thread.cc
+++ b/source/common/thread/terminate_thread.cc
@@ -4,6 +4,11 @@

 #include <csignal>

+#if defined(__FreeBSD__)
+#include <pthread.h>
+#include <pthread_np.h>
+#endif
+
 #include "source/common/common/logger.h"

 namespace Envoy {
@@ -12,11 +17,15 @@ namespace {
 #ifdef __linux__
 pid_t toPlatformTid(int64_t tid) { return static_cast<pid_t>(tid); }
 #elif defined(__APPLE__)
 uint64_t toPlatformTid(int64_t tid) { return static_cast<uint64_t>(tid); }
+#elif defined(__FreeBSD__)
+pthread_t toPlatformTid(int64_t tid) { return reinterpret_cast<pthread_t>(tid); }
 #endif
 } // namespace

 bool terminateThread(const ThreadId& tid) {
-#ifndef WIN32
+#if defined(__FreeBSD__)
+  return pthread_kill(toPlatformTid(tid.getId()), SIGABRT) == 0;
+#elif !defined(WIN32)
   // Assume POSIX-compatible system and signal to the thread.
   return kill(toPlatformTid(tid.getId()), SIGABRT) == 0;
 #else