Reginald
Teutonic origins, meaning 'King'.
Reuben
Hebrew origin, meaning 'Behold - A Son'.
Rita
Greek origin, from 'Margarita', a form of Margaret, meaning 'Child of Light'.
Roger
German origin, meaning 'Famous Spear'.
Ronald
English origin, meaning 'Powerful, Mighty'.
Rosa / Rose
Latin origin, meaning 'Rose Bush' or 'Pretty Rose'.