Ikhsan Leonardo Imanuel Rumbay (born 15 January 2000) is an Indonesian badminton player, who also plays for the PB Djarum club in national events.

[4] In December 2017, he clinched the boys' singles title at the Junior National Championships in Pangkal Pinang, after beating Gatjra Piliang Fiqihilahi Cupu in straight games.

[6][7] Rumbay competed at the 2018 Summer Youth Olympics in Buenos Aires, Argentina representing his country, but lost to Lakshya Sen of India in the quarter-final.

[9] In January, Rumbay competed at the home tournament, Indonesia Masters, but had to lose in the first qualifying round from Indian player B. Sai Praneeth.

[10] In September, Rumbay competed at the Indonesia Masters Super 100 I but lost at the third round from Chinese Taipei player Wang Po-wei in rubber games.