David Tomassini (born 14 March 2000) is a Sammarinese footballer who plays as a forward for AC Libertas and the San Marino national team.
Tomassini made his international debut for San Marino on 31 March 2021 in a 2022 FIFA World Cup qualification match against Albania. On 1 June 2021, he scored San Marino's first goal in over 1 year against Kosovo in a friendly in the 85th minute.