Sonia Friedman has taken the number one spot in The Stage 100, becoming only the second woman to top the list as a solo entry. She is also the first number one in the history of The Stage 100 not to own or operate West End theatres.
The exclusive list, compiled annually by the industry's leading newspaper, ranks the powerhouses of British theatre.
Sonia described topping the list as "amazing recognition of the extraordinary people I have been privileged to work with over the year."
"I feel very grateful to The Stage for this honour and feel extremely lucky to do a job I love so much," she added.
Alistair Smith, print editor of The Stage, said, "Sonia Friedman has enjoyed a number of notable hits in recent years, but in 2016, she went stratospheric.
"Harry Potter has been an extraordinary success both on a box-office level and an artistic one. As long as I've been writing about theatre I can't think of another show that has been as big - you're going back to the mega-musicals of the 80s."
It has been an extraordinary 12 months for Sonia Friedman Productions (SFP) achieving incredible successes with their productions of Harry Potter and The Cursed Child Parts I and II, Nice Fish, Funny Girl, Sunny Afternoon and Dreamgirls.
SFP's co-production of The Dresser for BBC and Starz has been nominated in the category of Best Television Limited Series or Motion Picture Made for Television at the 74th annual Golden Globes and it was announced that Harry Potter and the Cursed Child would be opening at The Lyric Theatre on Broadway in 2018.
Sonia herself was awarded an OBE and was voted as one of the 10 most influential people in London by the Evening Standard. She is currently short-listed for Producer of the Year at The Stage Awards 2017 - an award she won at the event in both 2016 and 2015. Winners will be announced at a ceremony on 27 January at the Theatre Royal Drury Lane.
SFP is a West End and Broadway production company responsible for some of the most successful theatre productions in London and on Broadway over the past few years. It was formed in 2002 and is a subsidiary of ATG.
Sonia is regularly credited in the media as one of the most powerful, innovative and influential producers working in British theatre and since 1990 has produced over 150 new productions and has won numerous Olivier and Tony Awards.
Prior to forming SFP, Sonia spent three years as the producer for ATG. Before joining ATG she was the producer and co-founder of Out of Joint and from 1989 to 1993 she was a producer at the National Theatre, specialising in touring productions and theatre for young people.
The Stage 100 list, 2017
1. Sonia Friedman
2. Andrew Lloyd Webber
3. Cameron Mackintosh and Nicholas Allott
4. Mark Cornell and Adam Kenwright (ATG)
5. Rufus Norris, Lisa Burger and Ben Power (National Theatre)
6. Nica Burns and Max Weitzenhoffer (Nimax Theatres)
7. Gregory Doran, Catherine Mallyon, Erican Whyman (RSC)
8. David Lan and Lucy Woollatt (Young Vic)
9. Josie Rourke and Kate Pakenham (Donmar Warehouse)
10. Emma Rice and Neil Constable (Shakespeare's Globe)