Tsunami (dad badan: tsunamis ama tsunami; laga soo bilaabo Japanese: 津波, lit. "dhawaaq dekedda"; Af-Ingiriis: /tsuːˈnɑːmi/), sidoo kale loo yaqaanno hirarka badda ee seismic ama hirarka hirarka, waa taxane hirar ah oo ku jira jirka biyaha oo ay sababtay guuritaanka mugga weyn ee biyaha, guud ahaan badweynta ama harada weyn. Tsunamis waxaa sababi kara dhulgariirrada badda hoosteeda ah sida 2004 Boxing Day tsunami, ama dhul-gariirrada sida 1958 ee Lituya Bay, Alaska, ama duufaanada sida duufaanta qadiimiga ah ee Santorini. Bishii Maarso 11, 2011, tsunami ayaa ka dhacday meel u dhow Fukushima, Japan
waxayna sii fidiyeen Badweynta Pacific.