Hillar

Hillar is an Estonian masculine given name and may refer to:
 * Hillar Aarelaid (born 1967), Estonian security officer
 * Hillar Eller (1939–2010), Estonian politician
 * Hillar Hein (born 1954), Estonian ski jumper, Nordic combined skier and coach
 * Hillar Kalda (born 1932), Estonian physician and politician
 * Hillar Kareva (1931–1992), Estonian composer
 * Hillar Kärner (1935–2017), Estonian chess player
 * Hillar Mets (born 1954), Estonian cartoonist, illustrator and animator
 * Hillar Palamets (1927–2022), Estonian historian and radio presenter
 * Hillar Rootare (1928–2008), Estonian-American physical chemist and materials scientist
 * Hillar Teder (born 1962), Estonian businessman

As a surname

 * Helena Hillar Rosenqvist (born 1946), a Swedish politician.
 * Marian Hillar (born 1938), an American philosopher, theologian, linguist, and scientist.