| Landreth Glacier | |
|---|---|
 Location of Smith Island in the South Shetland Islands | |
  Location of Landreth Glacier in Antarctica  Landreth Glacier (Antarctica) | |
| Location | Smith Island South Shetland Islands |
| Coordinates | 63°00′40″S 62°31′30″W / 63.01111°S 62.52500°W |
| Length | 1.2 nautical miles (2.2 km; 1.4 mi) |
| Width | 0.3 nautical miles (0.56 km; 0.35 mi) |
| Thickness | unknown |
| Terminus | Ivan Asen Cove |
| Status | unknown |
Landreth Glacier (Bulgarian: ледник Ландрет, romanized: lednik Landret, IPA: [ˈlɛdnik ˈɫandrɛt]) is the steep 2.3 km long and 600 m wide glacier on the southeast side of Imeon Range, Smith Island in the South Shetland Islands, Antarctica, which is draining southeastwards from Mount Foster between the side ridges separating it from Rupite Glacier to the north and Dragoman Glacier to the south, and flowing into Ivan Asen Cove on Bransfield Strait.
The glacier is named after the New Zealander Greg Landreth whose team made the first ascent of the island's summit Mount Foster (2105 m) on 29 January 1996.