The delegation led by Maharashtra minister of state Vidya Thakur met Mr Fadnavis and submitted to him a letter against the MNS' actions.
The delegation comprised leaders including BJP's Mumbai unit general secretary Amarjeet Mishra, vice-president RU Singh, and state president of Uttar Bharatiya Morcha Jay Prakash Thakur among others.
"We met Devendra Fadnavis ji and apprised him about how the hawkers were beaten up my the MNS 'goondas' (hooligans). We apprised him about how they have taken the law into their hands brazenly," Mr Mishra said.
"We demanded action against the MNS workers and the CM assured us to look into the issue and act against them," he added.
In the wake of the Elphinstone Road station foot overbridge stampede last month, in which 23 people had died, the MNS has started driving away unauthorised hawkers selling goods around the suburban railway stations.
Yesterday, city Congress leaders Sanjay Nirupam and Naseem Khan demanded that the rights of the hawkers be protected and action be taken against the MNS "goons".
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