Speaking to reporters, Raj said that his party would not allow taxis to play in Mumbai if non-Marathis were given licences.
He said, "Maharashtra is not a dharamshala for north Indians."
The MNS chief statement comes after Maharashtra government said that only drivers who can speak and read Marathi would get taxi licences.
The decision was announced by Chief Minister Ashok Chavan. He clarified that drivers also needed to know Gujarati and Hindi as these too were local languages.
Raj also said, "Why was such a decision announced if he (Chavan) did not have the courage to implement it?"