Yaƙin Katamanso kuma wanda aka sani (Yaƙin Dodowa) yaƙi ne da Ga-Adangbe ya ci kuma ya hana Ashantis mamaye yankin tekun a 1824. An ware shi a matsayin ɗaya daga cikin "Yakin Anglo-Ashanti" bisa ga shaidar tarihi a Gidan Tarihi na Ƙasa. Sarkin Ashanti ko Asantehene (Osei Yaw Akoto) a wancan lokacin, ya fusata a Ga-Adangbe saboda taimakon Fantes a yakin Asamankow na 1824, ya ba da shawarar a hukunta su. Ya yanke shawarar bin su, ko da sun tsere zuwa cikin kanfra (ƙaramin kifi mai lebur). A ranar 7 ga Agusta 1826, aka fara yakin wanda kuma aka sani da "Yaƙin Dodowa". Duk da haka ya sadu da gamayyar sauran sojojin 'yan asalin da ke kawance da Ga-Adangbe na Prampram, Ningo da mutanen Ada a ƙarƙashin Sarkinsu Tackie Kome. Sojojin Burtaniya, Holand da Danish gaba ɗaya ba su haura 60 ba, sun taimaka wajen yaƙi da sabbin makamai bayan wani hari da aka kai a bakin tekun a watan Yulin 1824. Asantehene ya tara sojoji 40,000.