James Nelson (7 January 1901 – 8 October 1965) was a Scottish professional footballer who played as a full-back. He moved to Ireland as a child where he began his senior career with Irish Intermediate League side Crusaders. He spent two seasons with the team before joining Football League First Division side Cardiff City in 1921. After two seasons as a reserve, he became established in the first team and went on to make more than 250 appearances in all competitions. He helped the club reach two FA Cup finals, losing the first in 1925 before Cardiff became the first team from outside England to win the competition in 1927. He also won the 1927 FA Charity Shield and the Welsh Cup on four occasions with Cardiff.