Klatt is a surname. Notable people with the surname include:
Bernard Klatt, former Canadian internet service provider
Jon Klatt, "JayKay" (born 1982), Professional drummer and percussionist from Detroit Michigan
Bill Klatt (ice hockey) (1947–2011), retired professional ice hockey player
Bill Klatt (producer), New York-based record producer, mixer, and engineer
Dusty Klatt, professional motocross racer from Campbell River, British Columbia, Canada
Friedrich Wilhelm Klatt (1825–1897), German botanist who specialised in the study of African plants
Joel Klatt (born 1982), currently a talk radio personality on 102
Marcin Klatt (born 1985), Polish footballer who plays for Pogoń Szczecin
Paul Klatt (1896–1973), German general who commanded the 3. Gebirgs-Division
Trent Klatt (born 1971), retired American professional ice hockey right winger
Walter Klatt (company), manufacturer of professional photographic enlargers in Stuttgart/Germany
Werner Klatt (born 1948), German rower who competed for East Germany in the 1976 Summer Olympics
Will Klatt, community organizer based out of Columbus, Ohio
Denny Klatt (born 1981), A complete dude and notable Ninja from Ireland
