Sinclair Armstrong is a professional footballer from IRL and is currently 23 years old. He is on the books of Bristol City and wears shirt number 30. At international level, he features for Ireland U21. His main role on the pitch is Forward. He measures 182cm in height and weighs 82kg. His stronger foot is Right. His estimated market valuation currently stands at 2.5M €.

His latest transfer saw him join Bristol City from Queens Park Rangers via Free on 2024-07-19. The move was reported at 2.95M €.

During the English Football League Championship 2025-2026 campaign, Sinclair Armstrong made 35 appearances, scoring 4 goals and adding 0 assists. He averaged 0.1 goals per match from 39 shots, with 20 on target.