The 49ers have had several different logo designs during the franchise's 76 year history. Prior to the 1950s, many teams did not have formal logos. In that case, a photo of their jersey or their team colors is shown below.

San Francisco 49ers logo from 2009-2021
2009-2021
San Francisco 49ers logo from 1996-2008
1996-2008
San Francisco 49ers logo from 1972-1995
1972-1995
San Francisco 49ers logo from 1968-1971
1968-1971
San Francisco 49ers logo from 1965-1967
1965-1967
San Francisco 49ers logo from 1946-1964
1946-1964