Himesh Reshammiya was born to Vipin Reshammiya, a Gujarati music composer, and Madhu Reshammiya, on 23 July 1973. At the age of 21, Reshammiya married Komal and they have a son named Swayam. On 12 September 2016, it was reported that Himesh and Komal mutually agreed to separate and file for divorce. On 11 May 2018, Himesh married his long-time girlfriend, actress Sonia Kapoor.

At the age of 26, Reshammiya began producing TV series such as Andaz, Ahha, Aman, Aashiqui, and Amar Prem and Jaan on Zee TV. He also composed title tracks for some of these shows. Reshammiya’s father was supposed to make a film with Salman Khan in the 1990s, but this did not take place; when Khan heard one of Reshammiya’s compositions, he was impressed and promised to let him compose music for one of his films. In 1998, Reshammiya made his debut as a music composer with the Salman Khan film Pyaar Kiya To Darna Kya, composing two songs for the project: “Pyaar Kiya To Darna Kya” and “Tum Par Hum Hai Aatke”. Both songs became hits.

Reshammiya gained more prominence when he composed songs for another Salman Khan film, Tere Naam (2003), for which he won several accolades, including the Zee Cine Award for Best Music Director and Screen Award for Best Music Director. In 2004, he wrote music for ten films, among them Aitraaz. In 2005, he worked on ten more films, including Aashiq Banaya Apne and Maine Pyaar Kyun Kiya?.

Reshammiya won the Filmfare Award for Best Male Playback Singer in 2006 for Aashiq Banaya Aapne, as well as receiving several other awards such as the Star Screen Award, IIFA Award, and the Zee Cine Award. He also received several nominations for his music direction. Reshammiya additionally won a BIG Star Entertainment Award as best music director for Prem Ratan Dhan Payo

Reshammiya was actively involved in mentoring and judging the singing competition Sa Re Ga Ma Pa Challenge on Zee TV. His group was known as Jai Mata Di Let’s Rock Gharana. He was the winning mentor of the show in 2007. In 2009, Vaishali Mhade, a female contestant from his Jai Mata Di Let’s Rock Gharana group, won the singing competition. He is also the team captain, judge, and mentor on Star Plus’s show Music Ka Maha Muqqabla for the team Himesh’s Warriors. Reshammiya was also the judge of the musical reality show Sur Kshetra, which was telecasted on Sahara One. He appeared as the special guest in the Grand Finale of Jo Jeeta Wohi Superstar 2, where he also trained the top four contestants.

On 4 November 2013, it was announced that Reshammiya would be acting in and producing a movie named The Xposé.

In April 2019, it was confirmed that Reshammiya would be back onscreen with the film Namastey Rome, which is a sequel to Namastey London and Namastey England. He also collaborated with lyricist Javed Akhtar in the film’s soundtrack, as they had worked together on Namastey London. Reshammiya also acted in three other projects, one being a sequel of The Xposé, named The Xposé Returns. Reshammiya also confirmed that he would make a biopic about the soldier Bishnu Shrestha; the film would be based on his involvement in the Maurya Express train robbery.