A turbocharger includes a turbine housing adapted to be arranged in the middle of an engine exhaust passage, a bearing housing coupled to the turbine housing, a turbine wheel located inside the turbine housing, a rotary shaft that is connected to the turbine wheel and is rotationally supported by the bearing housing, and a cooling water passage that is provided inside the turbine housing. The cooling water passage is located around the turbine wheel. The turbine housing includes a first connection portion joined to the bearing housing, a second connection portion joined to a part of the engine exhaust passage located on a downstream side of the turbine housing, and a heat insulating portion located between the cooling water passage and at least one of the first connection portion and the second connection portion.