Ferdinand William Baehr (1822–1892) was a Republican politician from California. He served as California State Treasurer in 1871-1875.
In 1869, the San Francisco Directory listed Ferdinand Baehr as a manufacturing jeweler with the firm Baehr William & Co.
Ferdinand Baehr married Augusta Catharine Scroder in 1857. They had a son William Baehr Jr., who became a partner in the firm A. Gerberding & Co.
Ferdinand Baehr became California State Treasurer after winning elections on Republican ticket on September 6, 1871, and served as state treasurer until September 7, 1875, when he lost after running as an independent candidate.