Kirdi ( /k ɜːr d ɪ / ) ƙabilu ne da al'adu da suka mamaye arewa maso yammacin Kamaru da kuma arewa maso gabashin Najeriya. Ana amfani da kalmar ga mutane da ba su musulunta ba a lokacin mulkin mallaka kuma ya kasance abun ki ne, kodayake daga baya marubuta sun wanke su. Kalmar ta fito ne daga kalmar Kanuri ma'ana arna; mutanen Kanuri galibi musulmai ne. Tun daga ƙarni na goma sha ɗaya Musulman Bantu, kamar Fulanin sun fara ƙaura zuwa Kamaru, inda suka yi yunƙurin musuluntar da mutanen da suka wanzu. Saboda haka kirdi, suna da ƙarancin kamanceceniya a al'adance ko a yare a dalilin wanzuwar su a kasashe daban daban, da farko suna cikin busassun matakai da savannahs na yankunan Arewa da Arewa masu nisa na Kamaru Kimanin yawan ƙungiyoyi da za'a iya bayyana a matsayin Kirdi ya bambanta, tare da kimantawa daga 26 (2007) zuwa fiye da 40 (1977). Bata, Fali, Fata, Gemjek, Guidar, Giziga, Hurza, Kapsiki, Mada, Mafa, Massa, Matakam, Mofou, Mora, Mousgoum, Muyang, Ouldeme, Podoko, mutanen Toupouri, Vame da Zulgo duk ana ɗaukar su Kirdi, saboda juriyarsu ga Musulunci.