To prevent air suction of a first oil pump pressure-feeding oil to each lubrication section from a transmission chamber in a lubrication structure of a V-type engine.

In this V-type engine, a lower part of the transmission chamber of a crank case 1 is defined as an oil reservoir part, and the first oil pump pressure-feeding oil in the oil reservoir part to each oiling sections and a second oil pump returning oil returning to a crank chamber to the oil reservoir part are provided. An oil discharge port 181a is formed at an upper surface of the cylinder head 22 of a rear cylinder 20. An oil return route to the transmission chamber from the oil discharge port 181a without passing through either of the crank chamber and the second oil pump is formed in the cylinder head 22, a cylinder 21 and the crank case 1.