The Voting Academy favoured ten Doeschate ahead of other top Associate players including Ireland's Niall O'Brien and the Kenyan pair of Alex Obanda and last year's winner of this award Thomas Odoyo.
During the 12-month voting period, ten Doeschate played four ODIs for the Netherlands taking 10 wickets at an average of 9.50 and a highly efficient economy rate of 2.87. He also averaged 31 with the bat at a strike-rate of 87.73.
In the four-day ICC Intercontinental Cup competition, his batting average was 68.50 and included a high score of 146 as one of two centuries.
The 28-year-old Essex player said: "I'm delighted to have won this award and I'd just like to take this opportunity to thank the Dutch coaching staff, the management and my team-mates for their support.
"And also I'd like to offer a big thank you to the ICC for their continued support of Associate cricket."
The Associate Player of the Year Award was one of eight individual prizes given at this year's LG ICC Awards. It was announced by South Africa all-rounder and ICC Cricketer of the Year in 2005 Jacques Kallis.
The Associate Player of the Year Award serves to recognise and reward the efforts in ODIs and ICC Intercontinental Cup matches of the outstanding cricketer from the top teams outside the ICC Full Members.
The LG ICC Awards 2008 - presented in association with FICA - are based on the 12 months between 9 August 2007 and 12 August 2008. The LG ICC Awards ceremony is now in its fifth year and this is the first time it has been staged in Dubai, the home of the International Cricket Council. Previous ceremonies were held in London (2004), Sydney (2005), Mumbai (2006) and Johannesburg (2007).