Cataldo Agostinelli (16 December 1894 – 18 January 1988) was an Italian mathematician who wrote 218 papers and several treatises in various disciplines which include dynamics of rigid systems, celestial mechanics, dynamics of non-holonomic systems and magnetohydrodynamics about which he wrote (1966), commissioned by C.N.R., a broad monograph in which also the magnetohydrodynamics waves, the vortexes and the plasma theory are dealt with.
He was member of the Accademia dei Lincei, President of the Accademia delle Scienze of Turin and member of several other local Academies.