KK Nagar (shortened from Kalaignar Karunanidhi Nagar)(Tamil: கலைஞர் கருணாநிதி நகர்) (originally called 'K. Kamaraj Nagar' but it was renamed during the DMK regime in the late 1960s^{[citation needed]}) is a small township located in the southern part of Chennai, India. This is situated west of Ashok Nagar and the Chennai Airport is around 10 km southwest of this place. KK Nagar was a locality developed in the 1970s and early 1980s. KK Nagar is roughly 5 km² in area. KK Nagar is organized by sectors and streets, and there are 15 sectors, and around 102 streets.

KK Nagar region is connected by roads with other important regions of the city. The region has a MTC Bus terminus located on Anna Main Road. Vadapalani is the nearest commercial area to KK Nagar. One has to travel a good 12 km to reach the Chennai Central Station (Park Town) from here. Mambalam Railway Station is the nearest suburban railway station to the place. The railway station is a couple of kilometres and towards the south east of the place. Chennai Airport lies to the southwest of KK Nagar and about 10 km from the place. The Chennai Metro upon completion would significantly enhance the connectivity of this locality to other areas in Chennai including the Central Railway Station and the Airport.