Klatt is a surname. Notable people with the surname include:
Bernard Klatt, former Canadian internet service providerJon Klatt, "JayKay" (born 1982), Professional drummer and percussionist from Detroit MichiganBill Klatt (ice hockey) (1947–2011), retired professional ice hockey playerBill Klatt (producer), New York-based record producer, mixer, and engineerDusty Klatt, professional motocross racer from Campbell River, British Columbia, CanadaFriedrich Wilhelm Klatt (1825–1897), German botanist who specialised in the study of African plantsJoel Klatt (born 1982), currently a talk radio personality on 102Marcin Klatt (born 1985), Polish footballer who plays for Pogoń SzczecinPaul Klatt (1896–1973), German general who commanded the 3. Gebirgs-DivisionTrent Klatt (born 1971), retired American professional ice hockey right wingerWalter Klatt (company), manufacturer of professional photographic enlargers in Stuttgart/GermanyWerner Klatt (born 1948), German rower who competed for East Germany in the 1976 Summer OlympicsWill Klatt, community organizer based out of Columbus, OhioDenny Klatt (born 1981), A complete dude and notable Ninja from Ireland