Keith Alexander

Keith Alexander may refer to:
 * Keith Alexander (footballer) (1956–2010), former English footballer and football manager
 * Keith B. Alexander (born 1951), retired U.S. Army general and former head of the National Security Agency
 * Keith Alexander (Manitoba politician) (1921–1972), Progressive Conservative politician in Manitoba, Canada
 * Keith Alexander (racing driver) (born 1963), American racecar driver
 * Keith Alexander (guitarist) (1963–2005), former guitarist of 1980s thrash band Carnivore
 * Keith Alexander (actor) (fl. 1966), British actor and voice actor
 * Keith Alexander (engineer), New Zealand inventor and professor of mechanical engineering at the University of Canterbury
 * Keith Alexander, a co-host of The Political Cesspool