The Murder She Wrote star died peacefully in her sleep at her home in Los Angeles, her family stated.
Following this news, tributes have been pouring in for the late actress, who went on to win five Tony Awards for her Broadway exploits, along with three Oscar nominations.
Frozen star Josh Gadd said that Lansbury touched "four generations" with her work.
"It is rare that one person can touch multiple generations, creating a breadth of work that defines decade after decade. Angela Lansbury was that artist", Gadd tweeted.
https://twitter.com/joshgad/status/1579924743515680768?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1579924743515680768%7Ctwgr%5E4ab2dcc3edcd09eac5b55b94ce1e352617b7cc4f%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fnews.sky.com%2Fstory%2Ftributes-pour-in-for-dame-angela-lansbury-after-her-death-aged-96-12718430
Catherine Zeta-Jones starred alongside Lansbury in the Broadway musical, A Little Night Music. She said that their time together will "forever be one of the joys of my life".
West End star Elaine Page also added that Lansbury was "one of the last Golden Age of Hollywood stars & a Broadway & West End icon".
Other tributes include:
https://twitter.com/KChenoweth/status/1579933943859904513?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1579933943859904513%7Ctwgr%5E4ab2dcc3edcd09eac5b55b94ce1e352617b7cc4f%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fnews.sky.com%2Fstory%2Ftributes-pour-in-for-dame-angela-lansbury-after-her-death-aged-96-12718430
https://twitter.com/GeorgeTakei/status/1579922852761198592?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1579922852761198592%7Ctwgr%5E4ab2dcc3edcd09eac5b55b94ce1e352617b7cc4f%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fnews.sky.com%2Fstory%2Ftributes-pour-in-for-dame-angela-lansbury-after-her-death-aged-96-12718430
https://twitter.com/HarveyFierstein/status/1579920365987704833?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1579920365987704833%7Ctwgr%5E4ab2dcc3edcd09eac5b55b94ce1e352617b7cc4f%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fnews.sky.com%2Fstory%2Ftributes-pour-in-for-dame-angela-lansbury-after-her-death-aged-96-12718430
https://twitter.com/PaulRudnickNY/status/1579921926587584512?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1579921926587584512%7Ctwgr%5E4ab2dcc3edcd09eac5b55b94ce1e352617b7cc4f%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fnews.sky.com%2Fstory%2Ftributes-pour-in-for-dame-angela-lansbury-after-her-death-aged-96-12718430