Edward Mayhoff 'Ed' Grimley was a character introduced on the television series SCTV and later used in Saturday Night Live. He was devised and played by Martin Short.

He is a hyperactive, neurotic nerd with a large frontal cowlick who is obsessed with banal pop culture, especially Wheel of Fortune and its host, Pat Sajak. He also loves to play the triangle, which for him consists of playing a recorded musical piece, striking the triangle once, and then wildly dancing to the recording. His catch phrases include "I must say", "totally decent", and "give me a break". One 1985 SNL skit featured Ed's look-alike Uncle Basil, played by TV sportscaster Howard Cosell.

The character originated with Short as an unnamed school parent in sketch on the Second City stage. Originally, his hair was simply very greasy and unkempt, but another cast member joked offstage that the height of the hair seemed to increase with each performance. As an inside joke, Short started greasing it straight up.

Ed Grimley makes an extremely brief onstage appearance in Martin Short's Broadway show Martin Short: Fame Becomes Me, triangle in hand.

Ed Grimley also made an appearance on the Martin Short Show in 1994, in a spoof of the film Dave. The President of the United States is an exact double of Ed Grimley, right down to the shark-tooth hairstyle. He hires Grimley to be his double and run the country while he enjoys time with his mistress. Unfortunately for Ed, the President suffers a heart attack and Ed Grimley is forced to cover up the tragedy by now having to pretend he is the President. Sally Field guest starred as the First Lady who does not realize what has happened. Ed Grimley is scared to deal with her, as he is presumably unmarried and may have difficulties being in relationships with women.

Ed Grimley is the ultimate nerd, devoted to Count Floyd and playing his triangle. This show shows his adventures as well as the typically pathetic shows of Count Floyd. Written by Kenneth Chisholm