"I stand by Om Puri who merely echoed publicly what is openly said a million times in millions of homes everyday, " Anupam posted on micro-blogging site Twitter.
Kher said that Om is not only an outstanding actor but also a true Indian.
"Om Puri apart from being an outstanding actor, is also a True Indian who echoed thoughts of Millions of Us. I stand by him. Do you?, " he added.
Om, 60, created a stir Friday with his speech attacking politicians. He told the thousands gathered that he feels "ashamed when an IAS or IPS officer salutes an anpad (uneducated) or ganwar (illiterate) who is a neta (political leader)". He has now apologised for his remarks but faces a privilege motion in Rajya Sabha for them.