Alexander "Alex" Sangalang Cauguiran is a Filipino politician and activist. He served as acting president and CEO of the Clark International Airport from 2016 to 2018. He is served as chief of staff of former Angeles City Mayor Edgardo Pamintuan from 2010 to 2016 and previously from 1992 to 1998. He also served as member of the Angeles City Council from 1998 to 2004.