I Not Stupid Too (Chinese: 小孩不笨2; pinyin: Xiǎohái Bù Bèn Èr; lit. 'Children are not stupid 2') is a 2006 Singaporean satirical comedy film and the sequel to the 2002 film, I Not Stupid. A satirical comedy, I Not Stupid Too portrays the lives, struggles and adventures of three Singaporean youths—8-year-old Jerry, his 15-year-old brother Tom and their 15-year-old friend Chengcai—who have a strained relationship with their parents. The film explores the issue of poor parent-child communication.

The director and screenwriter, Jack Neo, was inspired to make the film by a book about appreciation education. The movie was produced by MediaCorp Raintree Pictures on a budget of S$1.5 million. It stars Ashley Leong, Shawn Lee, Joshua Ang, Xiang Yun, Jack Neo and Huang Yiliang. Filming took place at several Singaporean schools in June 2005.

I Not Stupid Too was released in cinemas on 26 January 2006, and earned over S$4 million in total. The film became the second-highest grossing Singaporean film in history, with only Money No Enough grossing more. At the 2006 Hong Kong Film Awards, it was nominated for Best Asian Film, but lost to Riding Alone for Thousands of Miles. Critical reception was ranged from a positive review, although some criticized the film as overly preachy. A serialised version of the film was aired on Channel 8, and a Malay language remake was done four years later.

A sequel, I Not Stupid 3, is scheduled to be released in 2024.