Diogo Vaz is a settlement in the Lembá District on the western coast of São Tomé Island in São Tomé and Príncipe.

Its population is 632 (2012 census).

[1] It lies 7 km southwest of Neves and 6 km northeast of Santa Catarina.

It was established as a plantation complex, Roça de Diogo Vaz.

This São Tomé and Príncipe geographical location article is a stub.