Sources: 

Mukul Dev, a versatile Indian actor celebrated for his work across various film industries, passed away on May 23, 2025, at the age of 54 after battling illness and personal hardships.
He had been admitted to the ICU following days of poor health. Despite medical efforts, he could not recover. His health decline was compounded by deep depression stemming from the recent loss of his mother and separation from his wife and daughter.
"Despite taking all the efforts, he could not recover. The passing of his mother, along with the separation with his wife and daughter, he was deeply depressed and neglected his health constantly, all of this took a toll on his health."Mukul’s career included notable projects such as the unreleased film "Naam Kya Hai," produced by Amitabh Bachchan’s company ABCL, which marked his first acting income. He fondly recalled receiving Rs 75,000 from Jaya Bachchan for this film.
Celebrities expressed their grief on social media. Actress Sushmita Sen, who worked with Mukul in "Dastak," wrote,
"Mukul Dev, Rest in Peace you wonderful soul."Actor Varun Dhawan dedicated a reel on Instagram, saying,
"RIP, Mukul Dev. This one’s for you."Mukul Dev’s death marks a significant loss to Indian cinema, remembered for his talent and the personal challenges he faced in his final days.
Sources: 
Indian actor Mukul Dev, known for his versatile roles and work in multiple film industries, died at 54 after a period of illness and personal struggles. Celebrities Sushmita Sen and Varun Dhawan mourned his passing, sharing heartfelt tributes on social media.