He said other sportspersons, including shooter Anjali Bhagwat, would also be joining the campaign.
"A commendable effort by @MirzaSania! Her efforts towards a Swachh Bharat will go a long way in spreading awareness on the issue," Modi tweeted.
His tweet came after Sania, along with her father Imran, took up brooms and cleaned a road in Hyderabad. She posted a video of her effort on her Twitter page.
Sania, who was nominated by industrialist Anil Ambani, nominated nine persons, including fellow sportspersons and Bollywood personalities, to join the movement.
The Prime Minister also appreciated Maharashtra Governor Vidyasagar Rao joining the campaign in Maharashtra. "A wonderful effort", another tweet said.