Lopa or Rop (Ollop) is a minor Kainji language of Nigeria.
Lopa people neighbouring the Busa language have shifted to that language.
The name Rerang (Oleran) subsumes both Lopa and the closely related Cuba language (Urcibar) that it surrounds.
Blench (2019) lists Tsupamini as a related variety or dialect.
The name Lopa likely comes from the name lópár (Lapar), which refers to both the Rop and the Shuba. Cover terms referring to both Urcibar and Ollop speakers are [dÃÂÃÂþìþáà Âà] (one person), [òÃÂþìþáà Âà] (many people), and the language [òlÃÂèþáà ÂÃÂ].
Ollop is spoken in the major villages of àþóp (Lopa town), ùÃÂjẽ ÃÂmé (Gafara), rևÃÂÃÂé (Raishe); and the minor villages of ÃÂ֎ÃÂþà(Tungan Masu), òÃÂsán (Bakin Ruwa), lópár (Lapar), áñ wá à(Ana). Lopa speakers call themselves [dÃÂÃÂþóp] (one person), [òÃÂþÃÂÃÂp] (many people), and the language [òlÃÂÃÂÃÂp]. They refer to Urcibar speakers as [dÃÂÃÂtÃÂÃÂbár] (one person), [òÃÂtÃÂÃÂbár] (many people), and to their language as [ÃÂÃÂùtÃÂÃÂbár].