My World ... and Welcome to It is an American half-hour television sitcom based on the humor and cartoons of James Thurber.

It starred William Windom as John Monroe, a Thurber-like writer and cartoonist who works for a magazine closely resembling The New Yorker called The Manhattanite. Wry, fanciful and curmudgeonly, Monroe observes and comments on life, to the bemusement of his wife Ellen (Joan Hotchkis) and daughter Lydia (Lisa Gerritsen). Monroe's frequent daydreams and fantasies are usually based on Thurber material.

The series, which ran for one season during the 1969–70 season on NBC, was created by Mel Shavelson, who wrote and directed the pilot episode and was one of its principal writers. Sheldon Leonard was executive producer. The show's producer, Danny Arnold, co-wrote or directed numerous episodes, and appeared as Santa Claus in "Rally Round the Flag."