The Old Siam Plaza () is a shopping mall in Wang Burapha, a historic neighbourhood of Bangkok, Thailand. It is surrounded by Tri Phet, Burapha, Phahurat and parts of Charoen Krung roads, and is near other neighbourhoods such as Yaowarat, Pak Khlong Talat or Ban Mo.
History
The mall is on the site of the former Burapha Phirom Palace, which belonged to Prince Bhanurangsi Savangwongse, one of the brothers of King Rama V. After World War II, the palace was sold and became a shopping center which was popular with young people in the 1950s and 1960s.
The Old Siam Plaza was opened in 1993. The building is in a Colonial mixed architectural style.