This flotation device for oxygen tanks is created to allow anyone dependent upon supplemental oxygen to utilize the pool or shallow water for recreation, exercise or therapy. Having their tank close to them in the pool or shallow waters, allows for more freedom of movement and safety for themselves and for others. The flotation device for oxygen tanks includes a base member flotation board with attachment members that include flotation tubes, straps, buckles and a grommet to secure the tank to the base member.