Sam Kai Vui Kun, Chinese temple near St. Dominic's Market Complex, Macau.

Sam Kai Vui Kun is a Chinese temple in Macau featuring a gray brick facade and a traditional roof covered in green glazed tiles. The structure comprises three halls aligned along a north-south axis.

Sam Kai Vui Kun began as a meeting hall for merchants from Macau's three oldest streets: Rua dos Mercadores, Rua da Alfândega and Rua das Estalagens. Repairs are recorded on steles in 1792, 1804 and 1835; the last added a separate kong-so office beside the shrine. In 1805 it housed China's earliest smallpox vaccination clinic. Since 2005 it forms part of the Historic Centre of Macau UNESCO site.

The temple serves as a place of worship for Guan Yu and once functioned as an administrative hub where Chinese authorities made official announcements. Today, visitors can see incense and offerings left by worshippers throughout the space.

The temple is located at a street intersection and is open to visitors daily. Walking through requires careful attention to low doorways and ceilings, so move slowly and mindfully.

The temple holds a set of old silver weapons displayed along its interior sides, a feature not found in other Macau temples. The hall also houses altars to the God of Wealth (Cai Bo Xing Jun) and the Tai Sui deities alongside Guan Yu.