Template:MEpO


 * Oakfield Plantation (Aroostook Co.) organized from T5 R3 WELS in 1856; incorporated as the Town of Oakfield, Maine in 1897.
 * Orangetown Plantation (Washington Co.), aka Number 12 ED Plantation, incorporated as the Town of Whiting, Maine in 1825.
 * Orient Plantation (Aroostook Co.)
 * Osborn Plantation (Hancock Co.)
 * Ossipee Plantation (York Co.)
 * Otisfield Plantation (now Oxford Co.) was first organized as a plantation in 1787, and incorporated as the town of Otisfield, Maine in 1798.
 * Oxbow Plantation (Aroostook Co.), aka Umcolcus Plantation, was first organized as Number 9 R6 WELS Plantation in 1848; changed name to Oxbow in 1870.
 * Oxford Plantation (Oxford Co.)
 * Oxford Plantation (Penobscot Co.)