Allegrini is a surname. Notable people with the surname include:
Agnese Allegrini (born 1982), Italian badminton player Francesco Allegrini da Gubbio (1587–1663), Italian painter Giacinto Allegrini (born 1989), Italian football player Giuseppe Allegrini, Italian printer and engraver Laura Allegrini (born 1960), Italian politician Maria Allegrini, Italian physicist
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