| W. Onico Barker | |
| State Senate: | Virginia |
| District: | 19th |
| Term Start: | January 9, 1980 |
| Term End: | January 8, 1992 |
| Preceded: | Coleman Yeatts |
| Succeeded: | Charles R. Hawkins |
| Birth Name: | William Onico Barker |
| Birth Date: | 6 November 1934 |
| Birth Place: | Reidsville, North Carolina, U.S. |
| Death Place: | Dallas, Texas, U.S. |
| Party: | Republican |
| Alma Mater: | Virginia Tech (BS) |
| Residence: | Danville, Virginia |
| Allegiance: |  United States |
| Branch: | United States Army |
| Serviceyears: | 1957–1960 |
William Onico Barker (November 6, 1934 – March 25, 2023) was an American politician who served as a member of the Virginia Senate from 1980 to 1992.[1] He ran for the Republican nomination to succeed Dan Daniel in Congress in 1988 but lost to Reagan White House aide Linda Arey.[2] [3]
Barker died in Dallas, Texas on March 25, 2023, at the age of 88.[4]