C&IT's Power 50 will be revealed at an exclusive interactive event at Dukes hotel in London on 15 December.
The deadline for nominations is Thursday 26 November, and a shortlist of the 100 most nominated names will be revealed on citmagazine.com/power50 on 27 November.
Readers will then be asked to vote on the shortlist for the 50 individuals they feel made the biggest contribution to the UK events industry in 2009, with the reveal to be made at an interactive event Dukes on 15 December and the full list published in the January 2010 issue.
COI's Simon Hughes, Grass Roots' Nick Bender, Line Up's Duncan Beale, Zibrant's Chris Parnham and Barclays' Sarah Wright are among the most popular nominations so far.
C&IT editor Yasmin Arrigo commented: "We have seen a record number of new faces nominated for the Power 50 2009, and with so many individuals now in different roles compared to 2008, it looks set to be a very different ranking from previous years."
To register your interest in attending the Power 50 interactive launch event on 15 December, please email firstname.lastname@example.org
Want to find out who made the grade last year? See the Power 50 2008 rankings