A songthaew (Thai: สองแถว, rtgs: song thaeo, pronounced [sɔ̌ːŋ tʰɛ̌w], literally means "two rows";Lao: ສອງແຖວ, [sɔ̌ːŋtʰíw]; Malay: dua baris) is a passenger vehicle in Thailand and Laos adapted from a pick-up or a larger truck and used as a share taxi or bus.
The songthaew takes its name from the two bench seats fixed along either side of the back of the truck; in some vehicles a third bench is put down the middle of the seating area. Additionally a roof is fitted over the rear of the vehicle, to which curtains and plastic sheeting to keep out rain may be attached. Some vehicles have roofs high enough to accommodate standing passengers within the vehicle. More typically, standing passengers occupy a platform attached to the rear.
English-speaking travelers in Thailand named them baht bus, in reference to when the usual fare was one baht. In Chiang Mai and its surroundings, locals may call them rot si daeng (literally "car red" - a reference to their most common colour in the area, Thai รถสีแดง), rot daeng, or sometimes si rot.
The Isuzu Faster and Toyota Hilux are example models of songthaew found in Thailand.