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The 1999 Gold Flake Open was a men's tennis tournament played on outdoor hard courts in Chennai, India, that was part of the World Series of the 1999 ATP Tour. It was the fourth edition of the tournament and was held 5 April – 12 April.
Finals
Singles
Template:Main Template:Flagicon Byron Black defeated Template:Flagicon Rainer Schüttler, 6–4, 1–6, 6–3.
- It was Black's 1st title of the year and the 18th of his career.
Doubles
Template:Main Template:Flagicon Leander Paes / Template:Flagicon Mahesh Bhupathi defeated Template:Flagicon Wayne Black / Template:Flagicon Neville Godwin, 4–6, 7–5, 6–4.
- It was Paes's 2nd title of the year and the 15th of his career. It was Bhupathi's 2nd title of the year and the 13th of his career.