Domogan (born October 10, 1946) is a Filipino lawyer and politician and is the longest serving mayor of the city of Baguio.
A member of the Lakas Kampi CMD party, Domogan served three terms as mayor of Baguio, initially as acting mayor from July to October 1992, and officially as the new mayor in October 1992 after succeeding the mayoralty post from Ramon Labo after he was disqualified due to his citizenship status, until 2001, and again from 2010 to 2019.
He has also been elected to three terms as a Member of the House of Representatives of the Philippines, representing the Lone District of Baguio City.
He first won election to Congress in 2001, and was re-elected in 2004 and 2007.
In 2019, barred by the constitution to a fourth term, he ran once more for the city's lone congressional seat, against the incumbent Congressman, Marquez Go, to whom Domogan suffered the first loss in his political career.