Circuit de Monaco is the name given to a motor racing circuit laid out on the city streets of Monte Carlo and La Condamine around the harbour of the principality of Monaco. It is commonly referred to as "Monte Carlo" because it is largely inside the Monte Carlo neighbourhood of Monaco.

The circuit is used on one weekend in the month of May of each year to host the Formula One Monaco Grand Prix. Formula One's respective feeder series over the years — F2, F3000 and today GP2 — also visit the circuit concurrently with Formula One.