Dimitri Poliakov (born 19 January 1968) is a former professional tennis player from Ukraine.

Poliakov, a clay court specialist and the Soviet singles champion in 1990, had his breakthrough year in 1991, when he won the Yugoslavia Open, an ATP Tour event.

He defeated number three seed Amos Mansdorf in the opening round and then best Zimbabwean Byron Black 6–0, 6–3 and Martin Damm of the Czech Republic.

[1] He had one of the best wins of his career in 1992 when he defeated world number 12 Carlos Costa in Vienna in straight sets.

In the men's doubles he appeared in three Grand Slam tournaments but never progressed part the first round.