How do you Say Murdock in Irish?

There isn't a direct translation of the surname "Murdock" into Irish. Irish surnames are often derived from personal characteristics, places, or occupations, and "Murdock" has various possible etymologies, none definitively Irish. To create an Irish-sounding equivalent, you'd need to consider the possible origins of the name and then find a similar-sounding Irish name or create a new one based on those origins. Without knowing the origin of *your* specific Murdock family, it's impossible to suggest a definitive Irish equivalent.