"Kya tumhe yakeen hai ? Agar tumhe yakeen hai then 'Back his Back'," he wrote alongside the poster which features a back shot of a man.
In the picture the actor is seen wearing a blazer a cap and holding a sling bag.
The catch line of the poster is "Kya Tumhe Yakeen Hai".
The makers had released a small teaser of the film yesterday featuring a chorus in the voice of kids.
The movie marks the third collaboration between Salman and Kabir, who have previously worked together in "Ek Tha Tiger" and "Bajrangi Bhaijaan".
"Tubelight," which also stars Chinese actress Zhu Zhu, will hit the theatres on Eid.