To provide a fuel pump apparatus which eliminates the requirement for a protective case for protecting a fuel filter and an attaching stay for attaching the fuel filter to a vehicle body and reducing the cost.

In a fuel pump apparatus for supplying fuel to an engine, a lid member 60 is formed dividedly into a first lid member 67 having a fuel supply path, and a second lid member 70 removably provided on the first lid member 67 and having a fuel inflow path 68. A fuel filter 82 is disposed between the first lid member 67 and the second lid member 70. Since the fuel filter 82 is built-in the lid member 60, a protective case for protecting the fuel filter and a stay for attaching the fuel filter to a vehicle body are not required, reducing the number of component into cost reduction.