Flint the Time Detective, known in Japan as Space-Time Detective Genshi-kun (時空探偵ゲンシクン, Jikū Tantei Genshi-kun), is a Japanese anime television series directed by Hiroshi Fukutomi. It was based on a manga by Hideki Sonoda and Akira Yamauchi and was published by Bros. Comics in Japan. A second manga running in Comic Bom Bom was also produced and was released as a special promo for the anime. The anime aired in Japan from 1998 to 1999 on TV Tokyo and ran for 39 episodes.

In the United States, Flint the Time Detective aired from 5 March to 5 November 2000 on the Fox Family Channel as part of the "Made in Japan Sundays" block. Reruns were also seen on Fox Kids.

The series also aired in the Philippines via GMA 7 and dubbed in Filipino language which runs from late 2000 until mid-2001.

Sanrio, the company best known for creating Hello Kitty, holds the license to Flint the Time Detective in Japan. It is the only title in the company's roster to date to be aimed at elementary school boys.