Dame Rosemary Anne Squire, DBE (born 27 May 1956) is a British commercial theatre owner and entrepreneur.

Squire joined the board of management of the Society of London Theatres and the advisory panel of Arts Council Capital.

Squire was elected a Fellow of the Royal Society of Arts and joined the board of Donmar Warehouse Productions.

In June 2005, Squire became the first democratically elected president of the Society of London Theatre (the trade organisation of London's theatre owners and managers), and the second-only female president in the organisation's 100-year history.

[citation needed] In 2009, Squire was appointed a National Member of the Arts Council England Board.

[8] In November 2009, ATG realigned its shareholding to bring in private equity group Exponent for a deal to secure the funding for the acquisition of Live Nation's UK Theatre portfolio.

[13] In 2014, Squire topped The Stage 100 list for the fifth consecutive year, equaling the run previously set by Andrew Lloyd Webber.

Squire was Chair of the 'Raise the Curtain' Development Board, which was created to oversee the project.

[18] In December 2017, Squire was appointed Chair of Arts Council South West.