| Theodor Mantler | |
| Fullname: | Theodor Mantler |
| Birth Date: | 1893 |
| Birth Place: | Vienna, Austro-Hungary |
| Death Date: | 27 January 1970 |
| Position: | Goalkeeper |
| Years1: | 1916–1917 |
| Clubs1: | Rapid Wien |
| Caps1: | 19 |
| Goals1: | 0 |
| Years2: | 1917–191x |
| Clubs2: | Germania Schwechat |
| Years3: | 191x–19xx |
| Clubs3: | UTK Novi Sad |
Theodor Mantler (1893 – 27 January 1970) was an Austrian football goalkeeper and referee.
He played with SK Rapid Wien in the season 1916–17 when they won the championship,[1] and then he started the season 1917–18 and after making one league appearance he moved to Germania Schwechat on 3 September 1917.[2] After the end of First World War, Mantler played for some time in Yugoslavia with UTK Novi Sad in the Novi Sad Football Subassociation. Later, he returned to Austria and became a referee.