1979 European Indoor Championships

The 1979 European Indoor Championships, also known as the Cologne Grand Prix, was a men's tennis tournament played on indoor carpet courts in Cologne, West Germany that was part of the 1979 Colgate-Palmolive Grand Prix circuit. It was the fourth edition of the tournament and was held from 29 October through 4 November 1979. First-seeded Gene Mayer won the singles title.

Singles
🇺🇸 Gene Mayer defeated 🇵🇱 Wojciech Fibak 6–3, 3–6, 6–1
 * It was Mayer's 1st singles title of the year and the 2nd of his career.

Doubles
🇺🇸 Gene Mayer / 🇺🇸 Stan Smith defeated Heinz Günthardt /  Pavel Složil 6–3, 6–4