Arellano University (AU) is a private university founded in 1938 by Florentino Cayco, Sr., Philippines’ first Public Instruction Undersecretary. It was then known as the Arellano Law College, named after the first Filipino Chief Justice Cayetano Arellano. AU has seven campuses under its system: Arellano University Legarda Campus (Main), Juan Sumulong Campus, Jose Abad Santos Campus, (AU School of Law) Apolinario Mabini Campus, Andres Bonifacio Campus, Plaridel Campus, Elisa Esguerra Campus.
Arellano University is formed by five academic clusters that cater to undergraduates and postgraduates. Two clusters, the Allied Medical Services and the College of Business and Technology, are formed by one or more colleges, schools, or an institute. Arellano also has its own elementary and high schools. All academic programs are offered across its six campuses.