| Release Date | 17 November 1978 |
| Other Names | In a Year of 13 Moons |
| Genre | Drama |
| Country | West Germany |
| Language | German |
| Film Type | Feature |
| Film Class | Gay & Lesbian Films, Psychological Drama |
| Themes | Unrequited Love, Starting Over |
| Tones | Downbeat, Intimate, Reflective |
| Tags | Alienation, Bizarre, Camp, Daughter, Disturbance, Husband, Jilted, Loneliness, Love, Lover, Man, Moon, Mother, Obsession, Operation, Provocative, Rejection, Sex, Sex Change, Transsexual, Wife |
In a Year of 13 Moons (German: ) is a 1978 drama film directed by Rainer Werner Fassbinder and starring Volker Spengler. The film was made in response to the suicide of Fassbinder's lover at the time, Armin Meier.