A. S. Laxmi Narayanan (commonly referred to as Laxmi Narayanan) is an audiographer - sound engineer, mixer and sound editor. He is based in A. R. Rahman's studio, the Panchathan Record Inn and AM Studios. He won the National Film Award for Best Audiography for his work on the acclaimed feature film Kannathil Muthamittal (2002), directed by Mani Ratnam.

Some of the films Narayanan has provided audiography for include Kannathil Muthamittal (2002), Aayitha Ezhuthu (2004) and Bombay (1995). He has worked with fellow National Film Award winning sound mixer and audiographer H. Sridhar.