|Eastern Bird's Head, Indonesian Papua|
|Linguistic classification||West Papuan|
Hatam–Mansim is a small language family of New Guinea, consisting of two languages:
Ross (2005) tentatively classified Hatam as a branch of the West Papuan family, based on similarities in pronouns (he did not consider Mansim), but Glottolog continues to list Hatam–Mansim as an independent family. Following Reesink (2002), Glottolog lists Mansim as a language distinct from Hattam: "comparisons of old wordlists (e.g. von der Gabelentz & Meyer 1882) readily confirm this difference."
- Ross, Malcolm (2005). "Pronouns as a preliminary diagnostic for grouping Papuan languages". In Andrew Pawley; Robert Attenborough; Robin Hide; Jack Golson (eds.). Papuan pasts: cultural, linguistic and biological histories of Papuan-speaking peoples. Canberra: Pacific Linguistics. pp. 15–66. ISBN 0858835622. OCLC 67292782.