The 41-year-old actor thanked his fans for being his inspiration.
"Oye! I crossed 10 mil. Just realised. How wonderful. Thanks guys, u all r my biggest inspiration n my deepest reason 2 be n serve at my best ," he tweeted on Saturday.
The "Bang Bang" actor is currently shooting for Ashutosh Gowariker's epic adventure-romance "Mohenjo Daro" opposite actress Pooja Hegde, who makes her debut in tinsel town with the film.
Hrithik is behind megastar Amitabh Bachchan, who has 15.5 million fans, Shah Rukh Khan, who has 13.8 million, Salman Khan, who has 12.6 million and Aamir Khan, who enjoys 13.3 million followers on the website.