1999 Heineken Trophy – Men's singles

Patrick Rafter was the defending champion and defended his title defeating Andrei Pavel 3–6, 7–6(9–7), 6–4 in the final.

Seeds
• # 🇷🇺 Yevgeny Kafelnikov (withdrew due to a toe injury)

• # 🇦🇺 Patrick Rafter (champion)

• # Richard Krajicek (quarterfinals)

• # 🇸🇰 Karol Kučera (semifinals)

• # 🇩🇪 Tommy Haas (semifinals)

• # 🇸🇪 Jonas Björkman (quarterfinals)

• # Jan Siemerink (first round)

• # 🇨🇿 Bohdan Ulihrach (first round)