The flag of Pembrokeshire is the flag of the Welsh county of Pembrokeshire.
The flag was designed by Councillors Peter Stock, Dewi Pritchard, Jim Brock and Marjorie Jacobs in the 1970s after the abolition of Pembrokeshire County Council. It was registered by the Flag Institute in 1988. A statement by Peter Stock, 'The flag was dedicated as the official flag of Pembrokeshire, at Pembroke Castle at a ceremony on 28 July 1988 with a march past by the band of The Queen's Dragoons Guards.' The ceremony was recorded for posterity.
Joffre Swales, founder and conductor of the Haverfordwest Town Band wrote a march entitled "The Pembrokeshire Flag" for the band to perform on marches around the county.
The Pembrokeshire Flag is based on the flag of St David. (The saint's birthplace, the city of St David's, is in Pembrokeshire.) The blue is also considered to be reminiscent of the sea, and the yellow of summer sunshine. The central rose represents the red Tudor Rose, a symbol used by King Henry VII, who founded the Tudor dynasty; a man of both Welsh and English descent who was born in Pembroke Castle. The green pentagon around the rose symbolises the green fields and cliff-tops of Pembrokeshire.