Nils Ingvar Rohlsson (31 March 1916 – 20 May 1979) was a Swedish tennis player.

[1] Rohlsson made his first appearances as a Davis Cup player for Sweden in 1938, during the Europe Zone second round tie against Switzerland.

Rohlsson and Kalle Schröder managed the Swedish team's only victory of the tie, beating the German doubles pair of Henner Henkel and Georg von Metaxa.

His international career was interrupted by the War and he returned to Davis Cup tennis during the 1952 season, when he made his last two appearances in the competition.

The pair won their match in the second round tie against Chile, but in the quarterfinal against Belgium, they lost in four sets to Jacques Brichant and Philippe Washer.