Carrickgollogan (Irish: Carraig Uallacháin, meaning 'rock of Uallachán') is a hill in Dún Laoghaire-Rathdown in Ireland, towards the southern border of the historic County Dublin. It is 276 metres (906 feet) high, on the eastern edge of the Dublin Mountains, rising above the districts of Rathmichael and Shankill. Its summit is noted for the panoramic views it offers of south Dublin and north Wicklow.