Over 300,000 people voted in the poll, and the Serbian tennis star - who won three Grand Slam singles titles and made the final of the other - was a runaway winner, with 28.6 per cent of the vote.
Second on 17.9% was Barcelona and Argentina star Lionel Messi, whose outstanding performances in the second half of the 2014-15 season carried Barcelona to a historic treble.
Not far behind Messi was Steph Curry, whose magical shooting for the Golden State Warriors carried his team to the NBA title and an astonishing 24 consecutive wins at the start of the current season.
New Zealand rugby icon Dan Carter, who ended his international career after winning the Rugby World Cup in October, was fourth with 12.7%, while Usain Bolt was fifth on 10.7% after claiming the 100m and 200m sprint double at the Athletics World Championships in Beijing.
EUROSPORT WORLD STAR OF THE YEAR - 2015
- 1.Novak Djokovic (Tennis) - 28.6%
- 2. Lionel Messi (Football) - 17.9%
- 3. Stephen Curry (Basketball) - 16.5%
- 4. Dan Carter (Rugby) - 12.7%
- 5.Usain Bolt (Athletics) - 10.7%
- 6. Anna Fenninger (Alpine Skiing) - 4.3%
- 7. Lewis Hamilton (F1) - 3.9%
- 8. Serena Williams (Tennis) - 2.2%
- 9.Katie Ledecky (Swimming) - 2.2%
- 10.Jordan Spieth (Golf) - 1.1%
Total votes: 301,623
UK voters preferred Messi, who won 33% of the vote with Djokovic second on 20% and Bolt third with 12%. However votes from around the Eurosport network swung the result in Djokovic's favour.
Lewis Hamilton turned the tables on Sports Personality winner Andy Murray to win the UK Star of the Year award, claiming 31% of the public vote.
UK Star of the Year: Lewis Hamilton (F1)
Team of the Year: Barcelona (Football)
Coach of the Year: Luis Enrique (Barcelona)
Newcomer of the Year: Harry Kane (Tottenham & England)
Disappointment of the Year: Jose Mourinho (Chelsea)
Craziest Moment of the Year: Robert Lewandowski scores 5 goals in 9 minutes
French Star of the Year: Teddy Riner (Judo)
Spanish Star of the Year: Pau Gasol (Basketball)
German Star of the Year: Thomas Muller (Football)
Italian Star of the Year: Valentino Rossi (Moto GP)
The top three in Eurosport's World Star of the Year vote - Novak Djokovic, Lionel Messi and Steph Curry
Image credit: Eurosport