Namesakes
Richard
(a.k.a. Riccardo) (m) ?-1196 
Saints
Riccardo Pampuri
(m) 1897-1930
Saints
Riccardo Giacconi
(m) 1931-2018
Nobel Prize Winners 2002 (physics)
Notable Scientists and Inventors
Riccardo De Magistris
(m) 1954-
Olympic Medalists 1976 water polo (silver)