The 1999 Senior British Open was a professional golf tournament for players aged 50 and above and the 13th British Senior Open Championship, held from 22 to 25 July at Royal Portrush Golf Club in Portrush, County Antrim, Northern Ireland, United Kingdom.

[1] Christy O'Connor Jnr beat John Bland by three strokes and won his first of two Senior British Open titles.

Defending champion Brian Huggett finished tied 20th, 15 strokes from the back.

[2][3][4] The event was the fifth Senior Open Championship in a row held at Royal Portrush Golf Club.Source:[5] 123 players, 113 professionals and 10 amateurs, entered the competition.

The field included three former winners of The Open Championship, Bob Charles (tied 5th), Gary Player (3rd) and Tony Jacklin (missed cut).