Mannadi is an underground metro station on the North-South Corridor of the Blue Line of Chennai Metro in Chennai, India. The station serves the neighbourhoods of Mannadi and George Town. This station was opened for public on 10 February 2019. However, some portions of the construction work remains incomplete on the date of inauguration.

The Blue Line or Line 1 is one of the two lines of Chennai Metro, Phase 1 Project, the second being the Green line. The line stretches from Chennai International Airport to Wimco Nagar Depot. The line consists of 26 stations out of which 13 stations are underground and 13 stations are elevated.