| Type: | bishop |
| Honorific-Prefix: | His Excellency |
| Reinhard Lettmann | |
| Bishop of Münster | |
| Diocese: | Münster |
| See: | Münster |
| Appointed: | 11 January 1980 |
| Term Start: | 16 March 1980 |
| Term End: | 28 March 2008 |
| Predecessor: | Heinrich Tenhumberg |
| Successor: | Felix Genn |
| Ordination: | 21 February 1959 |
| Ordained By: | Michael Keller |
| Consecration: | 24 February 1973 |
| Consecrated By: | Heinrich Tenhumberg |
| Birth Date: | 9 March 1933 |
| Birth Place: | Datteln, Germany |
| Death Place: | Bethlehem, State of Palestine |
| Nationality: | German |
| Religion: | Roman Catholic |
Reinhard Lettmann (9 March 1933 - 16 April 2013) was the Roman Catholic bishop of the Diocese of Münster, Germany.
Ordained to the priesthood in 1959, Lettmann was named bishop in 1973 and retired in 2008.[1]