Rosenblatt is a surname of German and Jewish origin, meaning "rose leaf". People with this surname include:

• Albert Rosenblatt (born 1936), New York Court of Appeals judge
• Dana Rosenblatt, known as "Dangerous" (born 1972), American boxer
• Elie Rosenblatt (born 1979), Canadian-born Klezmer violinist
• Frank Rosenblatt (1928-1971), American psychologist notable in the field of artificial intelligence
• Jason Rosenblatt (born 1973), Canadian-born multi-instrumentalist and vocalist
• Jay S. Rosenblatt (1923–2014), American psychologist and animal behavior researcher
• Joan R. Rosenblatt (1926-2018), American statistician
• John R. Rosenblatt (1907–1979), mayor of Omaha, Nebraska
• Jonathan Rosenblatt (born 1956), American Rabbi
• Leida Rosenblatt, birth name of Epp Kaidu (1915-1976), Soviet and Estonian theatre director and actress
• Louise Rosenblatt (1904–2005), American literary critic
• Murray Rosenblatt (1926-2019), American statistician
• Paul Gerhardt Rosenblatt (1928-2019), American judge
• Richard Rosenblatt (born 1969), American businessman
• Richard Heinrich Rosenblatt (1930-2015) American ichthyologist
• Roger Rosenblatt (born 1940), American journalist, author, playwright and teacher
• Rose Rosenblatt (born 1947), American film director
• Sultana Levy Rosenblatt (1910–2007), Brazilian writer
• Susan Rosenblatt, later Susan Sontag (1933–2004), American author, filmmaker, philosopher, literary theorist and political activist
• Therese Steinhardt Rosenblatt (1896–1920), American painter
• Wibrandis Rosenblatt (1504–1564), German Christian active in the Protestant Reformation
• William Rosenblatt (1906–1999), New York state senator
• Yossele Rosenblatt (1882–1933), Ukrainian-born Jewish cantor

• IEEE Frank Rosenblatt Award, presented for contributions to biologically or linguistically motivated computational paradigms
• Johnny Rosenblatt Stadium, baseball stadium in Omaha, Nebraska