The 1991 Walker Cup, the 33rd Walker Cup Match, was played on 5 and 6 September 1991, at Portmarnock Golf Club, Portmarnock, County Dublin, Ireland.

Each of the 24 matches was worth one point in the larger team competition.

Rather, each side earned ½ a point toward their team total.

If the two teams were tied, the previous winner would retain the trophy.

Ten players for the United States and Great Britain & Ireland participated in the event plus one non-playing captain for each team.