Purina may refer to:
Ralston Purina, an American pet food company that was acquired in 2001 Nestlé Purina PetCare, the pet food division of Swiss-based Nestlé S.A., and the acquirer of Ralston Purina Company in 2001 (subsequently merged with Nestlé's Friskies PetCare Company) Purina Mills, a farm animal feed company that was spun off from Ralston Purina Company