- Thief Island
- Thomas Great Toe
- Thrumcap Island
- Thrumcap Island
- Tibbet Island
- Trainor Corner
- Trevett
- Tumbler Island
- Turners Corner
- Turnip Island
- Tyler Islands
- Tacoma
- Tallwood
- The Sands Island
- Togus
- Turtle Island
- Twelve Corners
- Tyler Corner
- Talbot Island
- Teel Island
- Ten Cent Island
- Tenpound Island
- Tenpound Island
- The Bandies
- The Brothers
- The Cow Pen
- The Fang
- The Neck
- The Nubble
- Thompson Island