Ruggiero Torelli (7 June 1884 in Naples – 9 September 1915) was an Italian mathematician who introduced Torelli's theorem, a classical result of algebraic geometry over the complex number field.

• Ruggiero Torelli (1913). "Sulle varietà di Jacobi". Rendiconti della Reale accademia nazionale dei Lincei. 22 (5): 98–103.
• Torelli, Ruggiero (1995), Ciliberto, Ciro; Ribenboim, Paulo; Sernesi, Edoardo (eds.), Collected papers of Ruggiero Torelli, Queen's Papers in Pure and Applied Mathematics, vol. 101, Kingston, ON: Queen's University, ISBN 0-88911-707-1, MR 1374332

• Torelli group

• Severi, Francesco (1916), "Ruggiero Torelli", Bollettino di bibliografia e storia delle scienze matematiche, Obituary, 18: 11–21

• Biography
• Biography in Italian