Manjak or Manjack (French: Mandjak, Mandyak; Portuguese: Manjaco) or Njak is a Bak language of Guinea-Bissau and Senegal. The language is also known as Kanyop.

In 2006, the total number of speakers was estimated at 315,300, including 184,000 in Guinea-Bissau, 105,000 in Senegal and 26,300 in The Gambia.

The Manjak dialects below are distinct enough that some might be considered separate languages.^{[citation needed]}

• Bok (Babok, Sarar, Teixeira Pinto, Tsaam)
• Likes-Utsia (Baraa, Kalkus)
• Cur (Churo)
• Lund
• Yu (Pecixe, Siis, Pulhilh)
• Unhate (Binhante, Bissau)

The Manjak dialects listed by Wilson (2007) are^[2]

• Canchungo (kancuŋuʔ) – central dialect
• Baboque (babɔk) (formerly Teixeira Pinto) – eastern dialect
• Churo (cuur) – northern dialect
• Pecixe (locally called pəhlihl; otherwise pəsiis), on an island to the south
• Calequisse (kaləkiis), to the west of Canchungo

The official spelling system for Manjak established by the Senegalese government is regulated by Decree No. 2005-983 of 21 October 2005.