| Frank Augustus Allen | |
| Office: | Mayor of Cambridge, Massachusetts |
| Term Start: | January 1877 |
| Term End: | January 1878 |
| Predecessor: | Isaac Bradford |
| Successor: | Samuel L. Montague |
| Office2: | President of the Common Council of Cambridge, Massachusetts |
| Term Start2: | December 1876 |
| Term End2: | January 1877 |
| Predecessor2: | George F. Piper |
| Successor2: | Perez G. Porter |
| Office3: | Member of the Common Council of Cambridge, Massachusetts |
| Term Start3: | 1875 |
| Term End3: | January 1877 |
| Birth Date: | January 29, 1835 |
| Birth Place: | Sanford, Maine |
| Death Date: | May 22, 1916 |
| Death Place: | Cambridge, Massachusetts |
| Spouse: | Elizabeth M. Scribner |
Frank Augustus Allen (January 29, 1835 - May 22, 1916) was a Massachusetts politician who served as the Mayor of Cambridge, Massachusetts.
Frank was born in Sanford, Maine. His father died when he was two years old. He worked in various businesses, but retired after fourteen years. In 1867, he and others formed the Oriental Tea Company in Boston. He and his family moved to Cambridge in 1870, where he was elected Mayor in December of 1876. He died in Cambridge in 1916.[1]