The 1909–10 Scottish football season was Celtic's 22nd season of competitive football, in which they competed in Scottish Division One.
[1] They won the League for the sixth time in a row, which was a record at the time and would remain so until Celtic itself beat it by winning nine league championships in a row from 1966 to 1974.
After having reached the final of the Scottish Cup for the previous three seasons, Celtic fell short of it losing 3-1 to Clyde in the semi-final.
Celtic won the Glasgow Cup, defeating Rangers 1-0 in the final.