These are the official results of the men's decathlon competition at the 1984 Summer Olympics in Los Angeles, California.

[2] These were the standing world and Olympic records (in points) prior to the 1984 Summer Olympics: Daley Thompson's time in the Olympic 110mH was initially recorded as 14.34, on which basis he started the final 1500m needing 4:34.8 to beat Hingsen's world record, or 4:34.9 to equal it.

[4] Under the 1984 tables (taking effect in 1985) Thompson's 8797 scored 8846, whereas Hingsen's 8798 was only 8832.

[2] In 1986, the IAAF re-examined the photo finish of Thompson's Olympic 110mH, found it was one-thousandth of a second faster than initially thought, and rounded his time down from 14.34 to 14.33.

[2] The IAAF ruled on 15 July 1986 that Thompson was co-holder of the world record from 9 August 1984 until 1 April 1985, and sole holder thereafter.