Ako Legal Wife: Mano Po 4? (Chinese: 合法妻; pinyin: Héfǎ qī; Pe̍h-ōe-jī: Ha̍p-hoat chhe) is a 2005 Filipino comedy-drama film directed by Joel Lamangan from a screenplay by Roy C. Iglesias and Lily Monteverde. The film focuses on the lives of the Chinese-Filipino community, and stars Jay Manalo, Zsa Zsa Padilla as the titular character of Chona, Cherry Pie Picache as Patty, and Rufa Mae Quinto as Gloria. The fourth installment of the Mano Po film series, the film's title was based on the line of Zsa Zsa Padilla in Mano Po 2: My Home: "Ako legal wife!" (lit. 'I legal wife!'). Produced by Regal Entertainment, it was released on December 25, 2005 as an entry to the 2005 Metro Manila Film Festival.

Apart from the other Mano Po films, it is the first film in the series to have pronounced comedic elements.