The Chao Phraya Express Boat is a transportation service in Thailand operating on the Chao Phraya River. It provides riverine express transportation between stops in the capital city of Bangkok and to Nonthaburi, the province immediately to the north. Established in 1971, the Chao Phraya Express Boat Company serves both local commuters and tourists. It also offers special tourist boats and a weekend river boat tours, as well as offering boats available for charter. Along with BTS Skytrain and Bangkok MRT, using the boats allows commuters to avoid traffic jams during the peak hours on weekdays. The 21 km (13 mi) route is served by 65 boats and operates from 06:00–21:30 on weekdays and from 06:00–18:40 on weekends and holidays. Current prices are from THB10 to THB32, depending on the type of boat and the distance travelled. The river boats carry an average of about 40,000 passengers per day.

Saphan Taksin station is a BTS skytrain station, on the Silom Line in Sathon and Bang Rak Districts, Bangkok, Thailand. The station is located at the entry ramp of Taksin Bridge, below Sathon Road, to the east of the Chao Phraya River. It is the only rapid transit station in Bangkok which can transfer to a river pier for the crossing-river ferry to Thonburi and the Chao Phraya Express Boat service. That makes the station popular for both daily passengers and tourists sightseeing by river boats to historical area such as Wat Arun, Wat Pho and Sanam Luang.