The 1991 Athens Open was a men's tennis tournament played on outdoor clay courts in Athens, Greece that was part of the World Series of the 1991 ATP Tour. It was the sixth edition of the tournament and was held from 30 September until 7 October 1991. First-seeded Sergi Bruguera won the singles title.[1]
See main article: 1991 Athens Open – Singles. Sergi Bruguera defeated Jordi Arrese 7–5, 6–3
See main article: 1991 Athens Open – Doubles. Jacco Eltingh / Mark Koevermans defeated Menno Oosting / Olli Rahnasto 5–7, 7–6, 7–5