Mama Diam is a hidden restaurant and cocktail bar on Prinsep Street in Singapore, serving local food and cocktails. Its menu reworks local flavours into dishes such as chilli soft shell crab, chicken curry kuay pie tee, and chicken pot rice. Behind an entrance styled like a 1980s or 1990s Singapore stationery shop, a bookshelf opens onto a modern bar space. Among the main dishes, the Hainanese pork chop is weaker than the others.