| William Floyd Gilliland | |
| Birth Date: | 17 December 1890 |
| Birth Place: | South Mountain, Ontario, Canada[1] |
| Death Place: | Edmonton, Alberta, Canada |
| Office: | Member of the Legislative Assembly of Alberta |
| Constituency: | Peace River |
| Term Start: | August 8, 1944 |
| Term End: | September 5, 1961 |
| Predecessor: | Eld Martin |
| Successor: | Euell Montgomery |
| Party: | Social Credit |
| Occupation: | farmer, politician |
William Floyd Gilliland (December 17, 1890 – September 5, 1961) was a politician from Alberta, Canada. He served in the Legislative Assembly of Alberta from 1944 until his death in 1961, as a member of the governing Social Credit caucus.
Gilliland was a farmer in the Peace River district for thirty years before running for public office.
Gilliland first ran for a seat in the Albert Legislature in the 1944 general election. He was nominated as the Social Credit candidate in Peace River on the second count at a convention held in Grimshaw, Alberta on March 2, 1944.[2] Gilliland took over 50% of the vote to defeat incumbent independent Eld Martin and two other candidates.[3]
In the 1948 general election Gilliland defeated two other candidates with over 60% of the popular vote.[4] Of the eleven MLAs who represented Peace River until 1948 he was the only one to win a second term in office.
In the 1952 general election Gilliland rolled up a very large majority over two other candidates.[5] In the 1955 general election he won over 50% of the popular vote to hold his district.[6]
In the 1959 general election Gilliland defeated two other candidates with over 60% of the popular vote.[7]
Gilliland suffered a heart attack at the 1961 Social Credit national convention in Ottawa. He died later that year while hospitalized in Edmonton.[8]