Kenneth, Ken or Kenny Baker may refer to:

• Kenneth F. Baker (1908–1996), American professor of plant diseases
• Kenny Baker (American performer) (1912–1985), American radio singer and actor
• Kenny Baker (trumpeter) (1921–1999), British jazz trumpeter
• Kenny Baker (fiddler) (1926–2011), American bluegrass fiddler with Bill Monroe
• Kenneth Baker (Jesuit) (born 1929), American Roman Catholic priest
• Kenny Baker (English actor) (1934–2016), played R2-D2 in Star Wars
• Ken Baker (trade unionist) (1924–2002), British trade unionist
• Kenneth Baker, Baron Baker of Dorking (born 1934), British Conservative politician
• Ken Baker (footballer) (born 1944), Australian rules footballer
• Ken Baker (entertainment journalist) (born 1970), American TV entertainment journalist
• Kenneth Baker (Metal Gear), fictional character
• Ken Baker, member of Unicorn (English band)