As Syakirin Mosque, Islamic prayer complex near Petronas Towers in Kuala Lumpur, Malaysia.

As Syakirin Mosque is a modern Islamic building near KLCC Park featuring two stories and contemporary architectural elements. The main structure contains a large prayer hall and various support spaces for visitors.

The mosque was built by the KLCC Project in 1997 and completed in 1998 on a 100-acre site, at a cost of RM 24 million. It was first registered with JAWI as a surau on 12 July 1999 for Petronas staff, later upgraded to a mosque under MAIWP. A RM 25 million renovation begun in early 2009 raised capacity to 11,000–12,000 worshippers. The 13th Yang di-Pertuan Agong, Sultan Mizan Zainal Abidin, officially opened it on 26 August 2011.

The name As Syakirin means 'the grateful people' and was chosen as the mosque's official name. It was first registered as a surau for Petronas staff on 12 July 1999, before being upgraded to a mosque under the Federal Territory Islamic Religious Council (MAIWP).

The mosque stands at the northern end of KLCC Park, next to Suria KLCC and the Petronas Twin Towers. It is a two-storey building with a hall for up to 1,000 people, meeting rooms and a mortuary room. Dress modestly and avoid walking through prayer areas during Friday prayers.

The building frames direct views of the neighboring Petronas Twin Towers, creating an interesting contrast between modern Islamic design and corporate architecture. This positioning makes it one of the few places to experience both structures together.