Marie Collings, sometimes referred to as Mary Collings, was a wealthy Guernsey heiress who ruled as Dame of Sark (island) from 1852 to 1853, being the island's second female ruler and the first holder of the fief from the presently ruling seigneurial family. She inherited the fortune of her father, the privateer John Allaire, who had obtained the mortgage on the fief shortly before his death. The island's then-ruling seigneur, Pierre Carey le Pelley, soon had no option but to sell the fief to Collings, but she never actively governed it.