James Hamilton Calder (born 20 August 1957)[1] is a former Scotland international rugby union player.
[3] He played for Combined Scottish Districts on 1 March 1986 against South of Scotland.
His twin brother, Finlay Calder, also played for Scotland and captained the 1989 British Lions tour to Australia.
The brothers never played in the same Scotland side; Jim Calder won the last of his caps against Wales in March 1985 and Finlay made his debut against France in January 1986.
Duncan, his elder son, retired from the game due to knee problems.