The actor was not present when stones were pelted at his house in suburban Juhu around 8 pm. A few window-panes were broken.
The police said a team has been rushed there and 11 persons have been taken into custody.
RPI activists were protesting Kher`s remarks allegedly against the Indian Constitution while talking to TV channels when he expressed support for Anna Hazare`s hunger strike.
A privilege motion has been moved against him in the Maharashtra Assembly with regard to his remarks.