Rotamah Island, or Gellung-warl in the Kurnai language, is a river island in The Lakes National Park, in the Gippsland Lakes of Victoria, Australia, about 6 kilometres (3.7 mi) from Paynesville, from which it is accessible by boat.

• Eucalypt and banksia woodland
• Prolific bird life with over 190 species recorded
• Kangaroos, wallabies, possums, echidnas and Hog Deer

• 1975 - Purchased by the Victorian Government
• 1978 - Rotamah and Little Rotamah Islands added to The Lakes National Park
• 1979-2001 - Birds Australia leases the island's homestead to operate as the Rotamah Island Bird Observatory

• Parks Victoria - The Lakes National Park