Garfield's Halloween Adventure (originally titled Garfield in Disguise) is a 1985 American animated television special based on the Garfield comic strip. It is directed by Phil Roman and written by Garfield creator Jim Davis, and features the voices of Lorenzo Music, Thom Huge, Gregg Berger and C. Lindsay Workman. It originally aired on CBS on October 30, 1985.

The special, a ghost story with a pirate theme, originally aired near Halloween and afterwards often played around the time of the holiday until the turn of the century. It won the Primetime Emmy Award for Outstanding Animated Program and was also the subject of an illustrated children's book adaptation.

This is the fourth of twelve Garfield television specials made between 1982 and 1991.