Nick Demusis (born May 9, 1991) is a Filipino-American professional basketball player.
Born in Leyte and later residing in Hawaii, he played his collegiate career in the United States. In 2019, he made his way to the Philippine domestic basketball scene, first in the Maharlika Pilipinas Basketball League (MPBL) before getting drafted to the PBA in 2021.
Before making his way to Philippine domestic basketball, Demusis played for Whittier College, a Division III school. In 2019, he began playing in his lone season in the then-amateur Maharlika Pilipinas Basketball League (MPBL). Playing for the Bacoor City Strikers, he scored 8.3 points per game on an average of 17.4 minutes per game.
On January 8, 2021, Demusis submitted his application for the PBA season 46 draft, where he would be selected with the 18th overall pick by the Phoenix Super LPG Fuel Masters.
Ahead of the 2022 PBA Philippine Cup, Phoenix traded Demusis and two future second-round draft picks to the Rain or Shine Elasto Painters in exchange for Javee Mocon.
On May 31, 2025, Demusis was let go by Rain or Shine after his contract was not renewed.
On June 17, 2025, Demusis signed with the Nueva Ecija Rice Vanguards.
After his stint with Nueva Ecija, he would join the Zamboanga Valientes for the Dubai International Basketball Invitational. During the tournament, he was attacked by Ismael Romero during a game against Al Ahli Tripoli. The Valientes have since filed a police complaint against Romero for the attack.
As of the end of 2024âÂÂ25 season
|- | align=left | | align=left | Phoenix Super LPG | 23 || 10.0 || .509 || .125 || || .625 || 2.9 || .3 || .3 || .1 || 2.9 |- | align=left | | align=left | Rain or Shine | 31 || 14.5 || .470 || .238 || || .762 || 4.3 || 1.2 || .4 || .1 || 5.4 |- | align=left | | align=left | Rain or Shine | 27 || 11.7 || .420 || .258 || || .565 || 2.0 || .6 || .4 || .1 || 3.3 |- | align=left | | align=left | Rain or Shine | 7 || 8.7 || .357 || .375 || .000 || 1.000 || 1.1 || .1 || .3 || .3 || 2.4 |-class=sortbottom | align="center" colspan=2 | Career | 88 || 12.0 || .458 || .247 || .000 || .694 || 3.0|| .7 || .4 || .1 || 3.9
As of the end of 2019âÂÂ20 season
|- | align=left | 2019âÂÂ20 | align=left | Bacoor City | 19 || 14 || 17.4 || .469 || .406 || .667 || 3.1 || 1.1 || .5 || .3 || 8.3 |-