Nicholas William Hamilton (born 4 May 2000) is an Australian actor, musician and singer  best known for portraying Rellian in Captain Fantastic and Henry Bowers in It and It Chapter Two.

Early life
Hamilton was born in Lismore, New South Wales, Australia to Vicki Atkins and Craig Hamilton and grew up in Alstonville. Nicholas graduated from Alstonville High School in 2018. He has a brother named Joshua "JJ" Hamilton and two sisters namely Rebecca Hamilton and Rachel Hamilton. His uncle died from cancer in 2011, which he credits as starting his career, stating "I knew I had to pursue acting for him." His first role was the part of Elvis in a grade five school play - Hamilton said he reluctantly took it, but 'really enjoyed  whole process' of rehearsal. He later joined a local acting agency.