The Al Islah Mosque, known locally as Masjid Al Islah, is located in Punggol within the North-East Region, Singapore. It was built in 2015 and is located nearby the Punggol Temporary Bus Interchange.

The architecture of the mosque is designed by Formwerkz Architects. It is the first mosque to be constructed in the Punggol neighbourhood after the earlier Masjid Wak Sumang was demolished along with the adjoining village for urbanisation.

The mosque was completed in 2015 and was built under the fourth phase of the Mosque Building Fund. It serves the needs of residents in Punggol as well as ease up the space for Friday prayers in the North-East region. An architectural company, Formwerkz Architects, designed the mosque's structure and general appearance. It has also been awarded an Honorable Mention in Architectural Design by Architecture Masterprize. It is the first mosque in the modern Punggol neighbourhood. Before its construction, the mosque of Kampong Wak Sumang existed in Punggol but was demolished in 1995 along with the village to make way for urbanization.

The mosque is considered as a center of harmony with various charitable events taking place there.

Designed by Formwerkz Architects, the mosque is built in a very modern style. The main prayer hall at ground level is accessible from all sides. The mosque is designed to fit 4,000–4,500 worshippers. Architectural features that include the usage of water as an element are present in the mosque.

• List of mosques in Singapore