Antanavičius

Antanavičius is a Lithuanian language family name. The surname may refer to:
 * Kazimieras Antanavičius (several persons)
 * Kazimieras Antanavičius (officer), partisan in the military of Lithuania, recipient of the Order of the Cross of Vytis
 * Kazimieras Antanavičius (economist) (1937–1998), signatory of the Act of the Re-Establishment of the State of Lithuania in 1990
 * Valentinas Antanavičius, Lithuanian painter