"June created one of the most iconic characters in Dot Cotton, not just in soap but in British television ... June's remarkable performances created some of EastEnders finest moments."
Brown's family has also released a statement sharing they are "deeply saddened" by the loss of their "beloved mother".
"We would kindly ask that our privacy is respected at this very difficult time."
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Tributes include a tweet from actor and writer Stephen Fry who has remembered Brown "as a tireless and fearless LGBT ally".
"June Brown, amongst all her other wonderful human qualities and achievements, will be remembered as a tireless and fearless LGBT ally - especially during the darkest days of HIV/AIDS and Section 28... it was a privilege to know her."
Brown's co-star Adam Woodyatt, who plays Ian Beale, also tweeted about "Dame Brown".
"Just purely and simply an incredible woman who had the most incredible life and career, I was fortunate to have shared a small part of it.
"They never made you a Dame [we did try], but to me you will always be Dame Brown."