Willie's Wonky Chocolate Factory is a United Kingdom television documentary series broadcast on Channel 4 in March 2008. Filmed in "fly-on-the-wall" style, it shows the efforts of Willie Harcourt-Cooze to establish a brand of 100% cacao chocolate in the UK.

The series centres around "Willie" Harcourt-Cooze, assisted by his wife Tania Harcourt-Cooze née Coleridge, who aims to grow high quality cacao beans on his farm in Venezuela, and then process them in the UK into luxury chocolate products.

A follow-up series, Willie's Chocolate Revolution: Raising the Bar, aired on Channel 4 over three consecutive nights, 7–9 April 2009. This followed Willie's attempt to introduce a high-cacao chocolate bar, "Delectable", in the British market.