Virgil van Dijk beat team mate Trent Alexander-Arnold and Matthijs de Ligt, who left Ajax for Juventus this summer to win the Defender of the Season Award.
In addition to the overall UEFA Player of the Year awards which took into account all competitions, both at club and worldwide level, UEFA also handed out men's 2018/19 Champions League awards for the best goalkeeper, defender, midfielder and forward.
Van Dijk was also integral to the Netherlands' run to the inaugural Nations League Finals in June, where they beat England 3-1 after extra-time in the last four before losing to Portugal in the final.
"It's been a long road, but that's part of my journey".
Van Dijk helped Liverpool win the Champions League trophy in Madrid at the end of last season.
Ronaldo, a three-time victor, has been ever-present since the award was created in 2011.
"Obviously, pre-season doesn't say too much but we know how good they are. We push each other, and it's good to be part of the history of football", he said.
Stewart Robson joins Alexis Nunes to explain why he expects this season's Champions League to be won by another Premier League giant.
His performances unsurprisingly saw him attract interest from some of Europe's biggest clubs, with Barcelona ultimately winning the race for the 22-year-old in a £65 million ($81m) deal.
"I need to thank all my team-mates and the staff".
English footballer Lucy Bronze was adjudged to be the best Women's Player of the Year ahead of France's Amandine Henry and Norway's Ada Hegerberg.
"We had an incredible season, winning the treble", said Bronze of Lyon's exploits.