| Birth Date: | 1951 6, df=y |
| Birth Place: | Wernigerode, East Germany |
| Height: | 1.86m (06.1feet) |
| Weight: | 800NaN0 |
| Sport: | Swimming |
| Club: | SC Dynamo Berlin |
| Show-Medals: | yes |
Lutz Unger (born 19 June 1951) is a retired East German swimmer. He competed at the 1972 Summer Olympics in the 4 × 100 m medley and 4 × 100 m and 4 × 200 m freestyle relays and finished in second, third and sixth place, respectively. He won three medals in these relays at the 1970 European Aquatics Championships.