Little Ghost Q-Taro (Obake no Q-Taro, lit. Q-Taro the Ghost) is a Japanese manga by Fujiko Fujio. It is about a ghost named Q-Taro who lives with the Ohara family. Q-Taro, also known as Q-chan or Oba-Q, is a mischief-maker who likes to fly around and have fun with his best friend Shota Ohara, though he is deathly afraid of dogs.

The stories are usually focused on the antics of Q-Taro and his friends. The manga was drawn in 1964–1966 by Fujiko Fujio (Fujiko F. Fujio and Fujiko Fujio A)
A successor series, titled New Little Ghost Q-Taro, was also drawn in 1971-1974 by the Fujiko Fujio duo.

An English manga volume was published in Japan as "Q the Spook", and in other languages the official title is "Little Ghost Q-Taro".