The Xiaolou Mosque (simplified Chinese: 小楼清真寺; traditional Chinese: 小樓清真寺; pinyin: Xiǎolóu Qīngzhēnsì) is a mosque in Erqi District, Zhengzhou, Henan, China.

The mosque was constructed in the 1920s. The mosque was rebuilt in 1979 and was renovated in 1984.

The mosque is a five-story building and covers an area of 4,000 m. It features a school that teaches Arabic.

The mosque is accessible within walking distance north of Zhengzhou railway station.

• Islam in China
• List of mosques in China