Jacob Phillip "Silent Jake" Volz (April 4, 1878 – August 11, 1962) was a pitcher in Major League Baseball who played between 1901 and 1908 for the Boston Americans (1901), Boston Beaneaters (1905) and Cincinnati Reds (1908).

In a three-season career, Volz posted a 2–4 record with 12 strikeouts and a 6.10 ERA in 11 appearances, including seven starts, two complete games, and 38⅓ innings of work.

[1] On May 19, 1911, he shot Anna point blank in the face in front of their home while she was holding the hand of her five-year-old son from a prior marriage.

[4][5] Volz died in his hometown of San Antonio, Texas, at age 84.

This biographical article relating to an American baseball pitcher born in the 1870s is a stub.