diff --git a/test/common/index.js b/test/common/index.js
index d762f4e0aa8498..315e35d04195f4 100644
--- a/test/common/index.js
+++ b/test/common/index.js
@@ -29,6 +29,7 @@ exports.isLinuxPPCBE = (process.platform === 'linux') &&
                        (os.endianness() === 'BE');
 exports.isSunOS = process.platform === 'sunos';
 exports.isFreeBSD = process.platform === 'freebsd';
+exports.isOpenBSD = process.platform === 'openbsd';
 exports.isLinux = process.platform === 'linux';
 exports.isOSX = process.platform === 'darwin';
 
diff --git a/test/parallel/test-child-process-exec-timeout.js b/test/parallel/test-child-process-exec-timeout.js
index 20923d922ab84c..369fab7d01d17a 100644
--- a/test/parallel/test-child-process-exec-timeout.js
+++ b/test/parallel/test-child-process-exec-timeout.js
@@ -16,15 +16,22 @@ const cmd = `"${process.execPath}" "${__filename}" child`;
 
 // Test the case where a timeout is set, and it expires.
 cp.exec(cmd, { timeout: 1 }, common.mustCall((err, stdout, stderr) => {
+  let sigterm = 'SIGTERM';
   assert.strictEqual(err.killed, true);
-  assert.strictEqual(err.code, null);
+  // TODO OpenBSD returns a null signal and 143 for code
+  if (common.isOpenBSD) {
+    assert.strictEqual(err.code, 143);
+    sigterm = null;
+  } else {
+    assert.strictEqual(err.code, null);
+  }
   // At least starting with Darwin Kernel Version 16.4.0, sending a SIGTERM to a
   // process that is still starting up kills it with SIGKILL instead of SIGTERM.
   // See: https://github.com/libuv/libuv/issues/1226
   if (common.isOSX)
     assert.ok(err.signal === 'SIGTERM' || err.signal === 'SIGKILL');
   else
-    assert.strictEqual(err.signal, 'SIGTERM');
+    assert.strictEqual(err.signal, sigterm);
   assert.strictEqual(err.cmd, cmd);
   assert.strictEqual(stdout.trim(), '');
   assert.strictEqual(stderr.trim(), '');
diff --git a/test/parallel/test-net-dns-error.js b/test/parallel/test-net-dns-error.js
index 5ca02313686589..5f51c8d5a45c62 100644
--- a/test/parallel/test-net-dns-error.js
+++ b/test/parallel/test-net-dns-error.js
@@ -6,17 +6,21 @@ const net = require('net');
 
 const host = '*'.repeat(256);
 
+let errCode = 'ENOTFOUND';
+if (common.isOpenBSD)
+  errCode = 'EAI_FAIL';
+
 function do_not_call() {
   throw new Error('This function should not have been called.');
 }
 
 const socket = net.connect(42, host, do_not_call);
 socket.on('error', common.mustCall(function(err) {
-  assert.strictEqual(err.code, 'ENOTFOUND');
+  assert.strictEqual(err.code, errCode);
 }));
 socket.on('lookup', function(err, ip, type) {
   assert(err instanceof Error);
-  assert.strictEqual(err.code, 'ENOTFOUND');
+  assert.strictEqual(err.code, errCode);
   assert.strictEqual(ip, undefined);
   assert.strictEqual(type, undefined);
 });
diff --git a/test/parallel/test-setproctitle.js b/test/parallel/test-setproctitle.js
index 12aea32ba306c7..0b703445ac20f2 100644
--- a/test/parallel/test-setproctitle.js
+++ b/test/parallel/test-setproctitle.js
@@ -30,7 +30,7 @@ exec(cmd, common.mustCall((error, stdout, stderr) => {
   assert.strictEqual(stderr, '');
 
   // freebsd always add ' (procname)' to the process title
-  if (common.isFreeBSD)
+  if (common.isFreeBSD || common.isOpenBSD)
     title += ` (${path.basename(process.execPath)})`;
 
   // omitting trailing whitespace and \n