The 5.5 Metre was a sailing event on the Sailing at the 1964 Summer Olympics program in Enoshima.

45 sailors, on 15 boats, from 15 nations competed.

[1] DNF = Did Not Finish, DNS= Did Not Start, DSQ = Disqualified = Male, = Female Of the total of three race areas were needed during the Olympics in Enoshima.

Each of the classes was using the same scoring system.

The Easterly course area was used for the 5.5 Metre.