SPA may refer to: Saudi Press Agency School of Planning and architecture is India's premier Architecture and city-planning institutions. Placed in Delhi Programs Publishers Association, nowadays referred to as a Software and Information Industry Association (SIIA). Società by the Azioni, abbreviated when "S.p.A.", Italian corporate form utilized by major public corporations quoted on the Italian securities market. Similar to the Joint Commodity Company. Special Protection Area - an important Nature reserve Saint Paul Academy and Summit School, a personal K-12 school in Saint Paul, Minnesota saddle point approximation in quantum field theory Latin for "sanus per aquam" meaning 'inside adept health across a body of water', typically incurred as an addition to the gymnasium's title indicating that it have the wellness/recreation vicinity including a sweat room, swim hall etc. Single Page Application, a web application that is entirely contained on the client-side (usually utilizing the combination of HTML, JavaScript, and CSS)