Film noir target audiences can vary in age and gender. While some experts argue the genre targets older audiences who grew up with film noirs, others believe younger viewers are interested in understanding the 1940s criminal underworld. However, more recent film noirs often receive 18+ ratings due to violence and sexual content. In general, the target gender is male, as film noirs typically feature attractive femme fatales who seduce or fall for the main male character, adding an element of fantasy for the male viewer. So in conclusion, while the target audience age may depend on the specific film, the genre generally aims for a male viewership.