Três Lagoas, city, east-central Mato Grosso do Sul estado (state), south-central Brazil, at the confluence of the Sucuriú and Paraná rivers, at 1,030 feet (313 metres) above sea level. The city is a hub of economic activity, serving as a cattle-shipping and meat-packing centre. Três Lagoas, which is on a rail line between São Paulo and Corumbá and is linked by road to Paranaíba and other towns in Mato Grosso do Sul, also serves as a transportation centre for the region. Pop. (2010) 101,722.