The singer's nearest rival on Twitter is Justin Bieber, with 28.5 million followers, while Katy Perry has 27.2 million.
Lady Gaga has utilised Twitter to communicate with fans
Lady Gaga has set a social media record by becoming the first person to reach more than 30 million followers on Twitter.
The 26-year-old singer is adding new followers at the rate of 30,000 a day, according to the Starcount website that monitors celebrity use of social media."Paving the way for other stars on social media, Lady Gaga often interacts with her fans and has even set up her own social network for the Little Monsters with thousands of regular users," Starcount commented in a blog.
"But it is Twitter that has given her the incredible social popularity that she currently has," it added, noting that her Twitter takeover started two years ago when she passed Ashton Kutcher, Barack Obama and Spears.
"Since then, her domination on the network has gone unmatched - she was the first person to reach 10 million and 20 million followers and is keeping up the trend now with 30 million."
Her nearest rival is teen popstar Justin Bieber, with 28.5 million Twitter followers, while Katy Perry has 27.2 million.
Rihanna has overtaken Gaga on YouTube and Facebook, but has only 26 million followers on Twitter.