In games with blinds, such as Texas Hold'em or Omaha, it is the player seated just to the left of ๐ธ the big blind. The under the gun player must act first pre-flop in a game with blinds. After the flop, ๐ธ the under the gun player is then the third to act, after the small blind and big blind.
UTG is also ๐ธ used as a shorthand for the other early positions, with UTG+1 being the next player to the left of the ๐ธ under the gun position, UTG+2 the second player to the left, and UTG+3 the third player to the left.
Disadvantages of ๐ธ the Under the Gun Position
The term under the gun implies that you are under pressure, and that is true for ๐ธ this position. Everyone is awaiting your play before the flop and you don't know what the others are planning to ๐ธ do.
Pre-flop, all of the players at the table will have the option to call, raise, or fold after the UTG ๐ธ position. When you are in this position, you have no information about the strength of the hands of the other ๐ธ players. You don't know whether any of the other players will be calling, raising, or folding, and how many will ๐ธ still be in the hand after the flop.