The article presents the available data about plurality marking in two groups (Leko and Yendang) of a hypothetical genetic unit known as Adamawa languages. It shows various strategies that languages of these two groups use in marking plurality. The main focus is made on Nyong and Maya (Bali) languages with which the author worked during field research in Adamawa state (Nigeria). The data of some other languages of these groups (Samba Leko, Kpasham (Sam), Kugama (Wam), Yendang and Waka) are also taken into consideration. This study offers a comparison of plurality strategies in these languages that helps in distinguishing conservative and innovative elements in plurality marking. It also shows some cases of possible plurality/noun class interaction.