| Francisco R. "Frank" Santos | |
| Office: | Vice Speaker of the Guam Legislature |
| Term Start: | January 4, 1993 |
| Term End: | August 9, 1993 |
| Predecessor: | John P. Aguon |
| Successor: | John P. Aguon |
| Office1: | Member of the Guam Legislature |
| Term Start1: | January 4, 1971 |
| Term End1: | August 9, 1993 |
| Successor1: | Francis E. Santos |
| Office2: | Commissioner of Sinajana |
| Term Start2: | 1965 |
| Term End2: | 1968 |
| Predecessor2: | Luis C. Baza |
| Successor2: | Alfonso M. Pangelinan |
| Birth Name: | Francisco Rivera Santos |
| Birth Date: | 1 October 1930 |
| Birth Place: | Guam |
| Death Place: | Los Angeles, California, U.S. |
| Party: | Democratic Party of Guam |
| Spouse: | Isabel B. Santos |
| Children: | Priscilla Tenorio, Sarah Leon Guerrero, Francis E. Santos, Vera De Oro, Martin Santos |
| Education: | George Washington High School |
Francisco "Frank" Rivera Santos (October 1, 1930 – August 9, 1993) was a Guamanian politician who recently serving in 12 consecutive Guam Legislatures.[1] He previously serves as commissioner of Sinajana from 1966 to 1968.
Francisco Rivera Santos was born 1 October 1930, in Guam to Jesus Aflague Santos (1901–1951) and Isabel Rivera Santos (1905–1990). Francisco R. Santos later attended George Washington High School on Guam. Francisco R. Santos had many chances to go to a college but he turned them all down. Soon after high school he met Isabel B. Santos after dating for a while they then got married. Shortly after had five children.
Francisco R. Santos ran as a Democrat for a seat the Guam Legislature in 1970 and placed 8th in the General Election, winning a seat in the 11th Guam Legislature. Following his first election, he was reelected 11 times and served until his death in 1993. His son, Francis E. Santos ran for and won his vacated seat.
| Election Year | Guam Legislature | Primary Rank (Votes) | General Rank (Votes) | Result | |
|---|---|---|---|---|---|
| 1970 | 11th Guam Legislature | 7 (5,936) | 8 (10,305) | Elected[2] | |
| 1972 | 12th Guam Legislature | 9 (4,907) | 18 (10,345) | Elected | |
| 1974 | 13th Guam Legislature | 9 (5,761) | 12 (10,861) | Elected | |
| 1976 | 14th Guam Legislature | Not available | 17 | Elected | |
| 1978 | 15th Guam Legislature | 3rd District: 2 | 3rd District: 3 | Elected[3] | |
| 1980 | 16th Guam Legislature | 3rd District: 1 | 3rd District: 2 | Elected[4] | |
| 1982 | 17th Guam Legislature | 2 | 13 | Elected[5] | |
| 1984 | 18th Guam Legislature | 9 | 11 | Elected[6] | |
| 1986 | 19th Guam Legislature | 12 | 16 | Elected[7] | |
| 1988 | 20th Guam Legislature | 13 | 18 | Elected[8] | |
| 1990 | 21st Guam Legislature | 12 | 19 | Elected[9] | |
| 1992 | 22nd Guam Legislature | No primary election | 19 | Elected[10] |
Santos died on August 9, 1993, (age 62) in Los Angeles, California.