Hajnal is both a Hungarian surname and a female given name. It means 'dawn' in Hungarian, the first light of daybreak. Diminutive Hajnalka is also used as a female given name; it is also the Hungarian word for morning glory. Notable people with Hajnal either as a surname or given name:
Surname: András Hajnal (1931–2016), Hungarian mathematician István Hajnal (1892–1956), Hungarian historian Ivo Hajnal (born 1961), Swiss–Austrian linguist János Hajnal (1913–2010), Hungarian-born artist and illustrator based in Italy John Hajnal (1926–2008), Hungarian-British mathematician and professor of statistics Tamás Hajnal (born 1981), Hungarian footballer
Given name: Hajnal Andréka (born 1947), Hungarian mathematician Hajnal Ban (born 1977), Australian lawyer and politician