Rasmus Nielsen

• Rasmus Nielsen (footballer), Danish footballer
• Rasmus Nielsen (volleyballer), Danish volleyballer
• Rasmus Nielsen (ice hockey), Danish ice hockey player
• Rasmus Nielsen (squash player), Danish squash player
• Rasmus Nielsen (philosopher), Danish philosopher and professor
• Rasmus Nielsen (biologist), professor of integrative biology at UC Berkeley
• Rasmus Kleis Nielsen, professor of political communication