Pál Harrer (18 October 1829 – 27 July 1914) was a Hungarian councillor and politician, who served as the first and only Mayor of Óbuda from 10 November 1872 until its unification with the towns of Buda and Pest to form Budapest in 1873.

Due to a congenital disorder affecting his left hand, Harrer chose an administrative career after finishing his secondary studies in Esztergom and Buda.

After the unification, Harrer functioned as prefect of Óbuda (3rd district or prefecture of Budapest, today called Óbuda-Békásmegyer) until his retirement in 1886.

His son was the jurist and MP Ferenc Harrer, who served as Minister of Foreign Affairs in 1919, and was a key promoter of the establishment of Greater Budapest.

Harrer's life-size bronze statue sculpted by László Kutas was unveiled on 5 March 2010 in Óbuda, next to the town hall.