Michael Holt is a superhero appearing in American comic books published by DC Comics. First appearing in Spectre (vol. 3) #54 (June 1997), the character was created by John Ostrander and Tom Mandrake. Holt is the second character to use the Mister Terrific codename, succeeding Terry Sloane. As Mister Terrific, the character is often affiliated with the Justice Society of America, serving as a prominent member and as its chairman.

Holt's background has varied over the course of his history but he is commonly depicted as African American, highly intelligent, and driven towards excellence and perfection. This earned him vast accolades, wealth, and athleticism until the untimely death of his wife. Sunken into depression, Michael contemplates suicide until divine intervention leads him to learning about the story of Terry Sloane, the former Mister Terrific, who had suffered circumstances similar to his own. Inspired by Sloane, he adopts his codename as well as the concept of "Fair Play", and honors his late humanitarian spouse by helping others. As the superhero Mister Terrific, Holt is considered among the most intelligent and wealthiest people on Earth and a noteworthy martial artist. While regularly on the JSA, the character has also served as a member of the Justice League and has led his own team, The Terrifics.

Holt has been adapted into media outside comics. Michael Beach, Hannibal Buress, and Kevin Michael Richardson, among others, have voiced the character in animated television series and films. Echo Kellum portrayed a version of the character renamed Curtis Holt in the CW Arrowverse series Arrow. Edi Gathegi played the character in the 2025 film Superman, set in the DC Universe (DCU).

Michael Holt was created by John Ostrander and Tom Mandrake and first appeared in Spectre (vol. 3) #54 (June 1997).

As part of DC's 2011 reboot of its continuity, The New 52, Mister Terrific received a self-titled ongoing series written by Eric Wallace and drawn by Roger Robinson. Holt begins sporting a new costume designed by Cully Hamner.

On January 12, 2012, the Mister Terrific series was cancelled alongside five other titles with low sales. The series ends with Terrific being displaced to a parallel universe, leading to his appearances in Earth-2.

Michael Holt is a prodigy who demonstrates advanced intelligence at a young age, comprehending the works of physicists Niels Bohr, Albert Einstein, Max Planck, and Richard Feynman. Michael grew up with his mentally challenged older brother, Jeffrey, whom he loved dearly. When Jeffrey died at the age of 12, Michael was devastated.

Before becoming a superhero, Holt possessed 14 Ph.Ds and was a self-made multi-millionaire and Olympic decathlete. Following the death of his wife Paula and their unborn child in a car crash, Holt contemplates suicide and becomes an atheist, with his previous beliefs being exacerbated by trauma. The Spectre (Jim Corrigan) tells Holt about Terry Sloane, the Golden Age superhero known as Mister Terrific, who died years prior. Inspired by Sloane's life story, Holt becomes the second Mister Terrific and joins the Justice Society of America (JSA), eventually serving as its chairman.