Knoll is a surname. Notable people with the surname include:
Albert Knoll (1796–1863), Austrian theologianAndrew H. Knoll (born 1951), Harvard University professor and paleontologistCatherine Baker Knoll (1930–2008), American politician and 30th Lieutenant Governor of PennsylvaniaCorina Knoll, American journalistChristoph Knoll (1563–1630), German theologian and hymn writerErwin Knoll (1931–1994), American journalistFlorence Knoll (born 1917), American architect and furniture designerHans Knoll (1914–1955), German-American co-founder of the Knoll company (see below); husband of Florence KnollHans Knöll (1913–1978), German physician and microbiologistJessica Knoll, American author of Luckiest Girl AliveJohanna Knoll, German rowerJeannette Knoll (born 1943), member of the Louisiana Supreme Court since 1997John Knoll (born 1962), co-writer of the program Adobe Photoshop and visual effects supervisor at Industrial Light & MagicJózsef Knoll, drug researcher who developed selegilineKonrad Knoll (1829–1899), German sculptorMarvin Knoll (born 1990), German footballerMax Knoll (1897–1969), German electrical engineer, inventor and professorMike Knoll (born 1951), American collegiate football coachSilke-Beate Knoll (born 1967), German sprinterThomas Knoll, co-writer of Adobe Photoshop and brother of John KnollXenia Knoll (born 1992), Swiss tennis player