Mechanix Illustrated is an American printed magazine that was originally published by Fawcett Publications.

Billed as "The How-To-Do Magazine," Mechanix Illustrated (MI) aimed to guide readers through various projects from home improvements and advice on repairs to "build-your-own (sports car, telescope, helicopter, etc)."

A long-running feature of Mechanix Illustrated was "Mimi," a shapely young woman dressed in skimpy overalls with blue and white vertical stripes; and, in the early sixties, a matching railroad engineer's cap (later discontinued).

An actress from Southern California, she left to live in Hawaii, and a readers' poll was conducted to choose a replacement from a short list.

A long-running cartoon feature, Roy Doty's "Wordless Workshop," is currently appearing in "The Family Handyman" magazine.