The Rajasthan High Court overturned a previous conviction which sentenced Mr Khan to five years in jail for shooting endangered blackbuck and chinkara while filming Hum Saath Saath Hain in Rajasthan 18-odd years ago.
Mr Khan's family and Khan loyalists from the film industry ranged themselves behind him.
Actor Varun Dhawan, whose father David Dhawan who directed Salman Khan in films like Biwi No 1, told the press: "I think the law has to take its course. It's the court's judgement and we have to respect it. So I respect the court's judgement." Varun was in New Delhi promoting his new film Dishoom.
His co-star Jacqueline Fernandez, Mr Khan's heroine in 2014 film Kick, was also asked but refused to comment.
Salman Khan's Yuvvraaj director Subhash Ghai tweeted:
acquittal @BeingSalmanKhan is story of bad times good times.I fully believe in our judiciary wid many doors open to knock 4 fair justice? Subhash Ghai (@SubhashGhai1) July 25, 2016
Mr Khan's sister Arpita Khan Sharma thanked fans for their support:
Thank You God for always showering us with your grace & blessings. Today is a big day for us @BeingSalmanKhan? Arpita Khan Sharma (@khanarpita) July 25, 2016
Thank U to all bhai's & the families well wishers for your prayers , support,love&best wishes.This wouldn't have been possible without you.? Arpita Khan Sharma (@khanarpita) July 25, 2016
Mr Khan's rakhi sister Shweta Rohira, who is currently separated from her husband Pulkit Samrat, also tweeted:
My happiness & relief knows no bounds today! Goodness wins!!? Shweta Rohira (@ShwetaRohira) July 25, 2016
Love you bhai @BeingSalmanKhan
Salman Khan was accused of killing chinkaras in two separate incidents. One animal was said to have been killed at Bhawad on the outskirts of Jodhpur on September 26, 1998 and the other at Ghoda Farms on September 28, 1998. He was shooting for the film Hum Saath Saath Hain at that time.
Mr Khan was last seen in Eid release Sultan, playing a Haryanvi wrestler.