The Arbitration Act 2005 (Malay: Akta Timbang Tara 2005) is a Malaysian law that was enacted to reform the law relating to domestic arbitration, provide for international arbitration, recognize and enforce awards, and deal with related matters.

The Arbitration Act 2005, in its current form (1 July 2011), consists of 4 Parts containing 51 sections and no schedule (including 1 amendment).