State Tower is a skyscraper located on Silom Road, Bang Rak business district, Bangkok, Thailand, adjacent to Charoen Krung Road. Built in 2001, it has a floor area of 300,000 m² (3,200,000 sq ft). State Tower has 68 floors and is 247 m (810 ft) tall, making it the 8th tallest building in Thailand. It is also the tallest mixed-use building in Thailand.

Conceived by Thai architect Professor Rangsan Torsuwan in the early 1990s and designed by Rangsan Architecture, the massive building is characterised by its thirty-meter tall golden rooftop dome and neo-classical balconies. It was originally named "Silom Precious Tower", later "Royal Charoen Krung Tower" (RCK Tower) and then "State Tower".

State Tower contains condominiums, serviced apartments, offices and retail units. It is also home to two five-star hotels, lebua at State Tower and Tower Club at lebua. Sirocco, an open-air restaurant with a panoramic view of Bangkok, is located on the 63rd floor. There are two Michelin starred restaurants on the top floors of the tower, owned and managed by lebua Hotels and Resorts.

State Tower is owned by Challenge Group. In 2015, Nusasiri PLC bought non-performing condominium units from Bangkok Commercial Asset Management Co and renovated for resell. The total units bought was 166 spanning floors 28-32 and 42-50.