Is adultery a crime in Singapore?

Short answer

No, adultery is not a criminal offence in Singapore and cannot lead to police charges, fines, or imprisonment. In Singapore adultery is marital infidelity and is deemed as breach of personal vows. Although not illegal, adultery is recognised under our matrimonial laws as one of the facts that a party can cite to prove that the marriage has irretrievably broken down. However, it is important to file the divorce less than 6 months from discovery of the adultery to show that you find it intolerable to continue living with your unfaithful spouse.