This is a complete listing of all credited guest actors for each episode of American Dad!, sorted by season. Uncredited appearances will not be included except for documented archive footage.
- Guest Voice Credits Season 1
- Guest Voice Credits Season 2
- Guest Voice Credits Season 3
- Guest Voice Credits Season 4
- Guest Voice Credits Season 5
- Guest Voice Credits Season 6
- Guest Voice Credits Season 7
- Guest Voice Credits Season 8
- Guest Voice Credits Season 9
- Guest Voice Credits Season 10
- Guest Voice Credits Season 11
- Guest Voice Credits Season 12
- Guest Voice Credits Season 13
- Guest Voice Credits Season 14
- Guest Voice Credits Season 15
- Guest Voice Credits Season 16
- Guest Voice Credits Season 17
- Guest Voice Credits Season 18