The Rio Tocantizinho is a river in central Goiás state, flowing generally northward before emptying into the Tocantins River near coordinates 13°57′S, 48°19′W. The river is one of the notable waterways in the state and is recognized for its white water character, featuring rapids that attract commercial rafting operations in the vicinity of Alto Paraíso de Goiás.

Commercial rafting trips on the river cover approximately 30 kilometers and typically take around 8 hours on the water, with the full day excursion running about 13.5 hours including transportation. The put-in is reached by roughly a one-hour bus ride from Alto Paraíso de Goiás, making that town the practical base for trips on this stretch. The river's gradient produces white water conditions suitable for rafting, and the route includes stops along the way. Guided trips are available with English-speaking guides and include equipment, breakfast, and lunch.

Self-guided paddlers should seek local knowledge in Alto Paraíso de Goiás before attempting the river, particularly regarding current water levels, seasonal conditions, and access considerations.