IPAC may refer to: Infrared Processing and Analysis Center, a NASA science center at Caltech International Plus, Advanced & Challenge Square Dance Convention, an international square dance event Inter-Parliamentary Alliance on China Iraq Peace Action Coalition, an antiwar organization based in Minneapolis, Minnesota Internet Protocol Automatic Configuration, see IpAc, a shorthand for the chemical isopropyl acetate Inter-Party Advisory Committee, in Ghana; see See also iPAQ, a personal digital assistant from Compaq (now Hewlett Packard) AIPAC, American Israel Public Affairs Committee OPAC, Online Public Access Catalog