This category may refer to several unrelated langoids:
- Bulu (or Boulou) (native name: bulu) [bum], a Northwest Bantu (A-B.10-30) language;
- Seki (or Beseki, Seseki, Sheke, Shekiyana, Bulu) (native name: syi) [syi], a Northwest Bantu (A-B.10-30) language;
- bjl (native name: bjl) [bjl], a Meso Melanesian linkage language;
- Bulu [Glottolog: bulu1255], one of the dialects of Western Puroik [?] [Glottolog: west2873], a Tibeto-Burmese language.