McCullough
- Alfred McCullough
- Alison McCullough
- Andrew McCullough
- Bernie Mac
- Billy McCullough
- Brian McCullough
- Chris McCullough
- Clan MacCulloch
- Clan McCulloch
- Clandeboye
- Clayton McCullough
- Clinton McCullough
- Clyde McCullough
- Colleen McCullough
- Conde McCullough
- Cú Chulainn
- David McCullough
- Denis McCullough
- Donald McCullough (disambiguation)
- Douglas McCullough
- Ellen McCullough
- Esther Morgan McCullough
- Frank S. McCullough
- Frisby McCullough
- Gaelic language
- Galloway
- George McCullough
- Helen Craig McCullough
- Henry M. McCullough
- Henry McCullough
- Hiram McCullough
- Irish-Gaelic
- J. McCullough
- James McCullough (disambiguation)
- Jethro J. McCullough
- John McCullough (disambiguation)
- Joy McCullough
- Julie McCullough
- Kimberly McCullough
- Liam McCullough
- Louis McCullough
- Luke McCullough
- Mac Cana
- MacDonlevy
- McCullagh
- McCulloch
- McMahon clans
- Michael McCullough (entrepreneur)
- Michael McCullough (psychologist)
- Mike McCullough (disambiguation)
- Naida McCullough
- Paul McCullough
- Paul McCullough (baseball)
- Paul McCullough (footballer)
- Peter McCullough (disambiguation)
- Philo McCullough
- Richard D. McCullough
- Robert McCullough (disambiguation)
- Saladin McCullough
- Shanna McCullough
- Suli McCullough
- Sultan McCullough
- Ulster
- Wayne McCullough
- William McCullough (disambiguation)