The 80-year-old made his debut on the micro-blogging website with the @luvsalimkhan handle on Tuesday.
Salman tweeted on his father's debut on social media: "Love you dad, welcome to twitter @luvsalimkhan (Salim Khan)."
Salim Khan's first three tweets were on veteran writer and RSS chief Mohan Bhagwat�s statement on "Bharat Mata Ki Jai".
"Mohan Bhagwat has said we have to create an India so great that people will themselves say Bharat Mata Ki Jai. Salaam Bhagwat Saab! Lot of people say with pride that they haven't changed. That means they are not growing."
"Change is growth. Bharat Mata Ki Jai. -Luv, Salim Khan," read the veteran writer's first few tweets, which were also shared by Salman.
On the work front, Salman is currently shooting for "Sultan", directed by Ali Abbas Zafar. It also stars actress Anushka Sharma.
The film will see Salman in the role of a wrestler, and he has also gained weight for his character. Even Anushka has undergone rigorous training for six weeks for her role as a wrestler in the movie.(IANS)