Star Alliance Gold Elite Members* - source for below:

Eligible Star Alliance Gold Elite members (OnePass Platinum and Gold members) are invited to visit designated Star Alliance member lounges.

When traveling in conjunction with a Star Alliance member airline international flight, Continental, United and US Airways Star Alliance Gold Elite members may access any Presidents Club, Red Carpet Club and US Airways Club on the day of departure. Other Star Alliance member lounges may be accessed in conjunction with any Star Alliance member airline flight by Continental Star Alliance Gold Elite members on the day of departure.

You are invited to bring one guest to any Star Alliance Gold member lounge. Present your valid OnePass Gold or Platinum Elite card or any Star Alliance airline frequent flyer card with the Star Alliance Gold logo for entry. You must also present a Star Alliance member airline boarding pass for an international or domestic same-day departure depending upon the situation.

At some destinations, a contract lounge may be available. Star Alliance Gold members may access contract lounges when traveling internationally with a Star Alliance member airline that has an agreement with the contract lounge.

Present your same-day international boarding pass on the Star Alliance member airline that has contracted the lounge. You must also present a valid OnePass Gold or Platinum Elite card, or any Star Alliance airline frequent flyer card, with the Star Alliance Gold logo for entry.