More than 130 proposals were submitted, and the 13 finalists represent newcomers as well as established documentarians including Isaac Julien and Lucy Walker.
The pitchers present their ideas on July 26 to a panel including Cynthia Kane of ITVS, Nancy Abraham of HBO, Christine Lubrano of IFC, Andrea Meditch of Discovery Docs, Mark Atkin of SBS Australia, Liesl Copland of Netflix's Red Envelope Entertainment, Jutta Krug of WDR Germany, Mette Hoffman Meyer of DR, Bert Janssens of Humanist Broadcasting Foundation, Flora Gregory of Al Jazeera, Emma Clarke of the UK Film Council and Nathalie Verdier of Arte.
The panel will vote on one winner who recieves the $2,000 (£1000) cash prize.
The 13 finalists to pitch will be:
Henry Singer with The Blood Of The Rose
Isaac Julien with Derek Jarman
Caroline Deeds with Witches
Tom Roberts with The Glorious 7th Cavalry
Daisy Asquith with The Great Velcro
Simon Chambers with Cowboys In India
Paul Berczeller with Through A Glass, Darkly
Christine Anderson with Who Killed Nancy
Lucy Walker with Pow Wow
Marc Hawker with Gross National Happiness
Thea Newcomb with So You've Been Dumped
Jamie Jay Johnson with Son Of Eurovision A Popumentary
Johan Grimonprez with Double Take
Britdoc is in its second year, and the festival said that more than a third of last year's Pitching Forum participants received funding as a direct result.
Britdoc runs July 25-27 in Oxford with screenings, panels, masterclasses and one-to-one meetings.