Danas Pozniakas (Russian name: Daniel Poznyak) (October 19, 1939 in Białystok – February 4, 2005 in Vilnius) was a Lithuanian boxer who competed for the Soviet Union.
In 1968 he won the Olympic gold medal in the light heavyweight class.
His family moved to Vilnius in the 1950s. From 1959 to 1966 he trained at the Armed Forces sports society, and from 1968 to 1969 for Trudovye Rezervy sports society in Vilnius. He became the Honoured Master of Sports of the USSR in 1965 and was awarded the Order of the Red Banner of Labour in 1969. During his career Pozniakas won 203 fights out of 217. Starting in 1974 he was an AIBA International Referee.