A penalty shootout victory over Cardiff, in which the Holland international scored in extra time and from the spot, ended the Reds' six-year trophy drought.
It also brought to a close a long personal quest for Kuyt who, along with Fabio Aurelio, has been at the club the longest without winning a trophy.
Kuyt moved from Feyenoord just a couple of months after Liverpool lifted the FA Cup in Cardiff in 2006.
He was a goalscorer for the losing side in the Champions League final against AC Milan less than a year later, while in 2010 he was part of the Holland team beaten by Spain in the World Cup final in South Africa.
But with his 32nd birthday approaching this summer, time was running out for him to pick up some silverware.
"I have a couple of medals but at the end of the day all that matters are trophies and this is like the gold medal," said Kuyt, whose only other success came in the Dutch Cup for Utrecht in 2003.
"Unfortunately I lost the Champions League final and the World Cup final, but to win the Carling Cup means something very special to me.
"I have been here almost six years now and I came to Anfield to win trophies so I am really pleased with the performance we gave as a team.
"If you want to be remembered as a footballer you have to win trophies and I am really glad I did that with Liverpool.
"You can say the Carling Cup is not the most important trophy, but it is to me."
Kuyt will make a swift return to Wembley on Wednesday to face England in a friendly, and the national stadium now holds a place in his heart.
"For me Wembley is now a special place forever," he added. "To be involved and score in a final and to score an important penalty in a final is something you will never forget ever in your life.
"I think this trophy is majorly important for the future of Liverpool. Everyone was waiting for this trophy - myself included - but now we have won one hopefully it is the first one of many more to follow.
"Hopefully we will be back soon."
Despite starting the second leg of the semi-final at home to Manchester City, Kuyt was left out of the starting XI by manager Kenny Dalglish yesterday.
However, his 103rd-minute introduction proved pivotal as he scored within five minutes of coming on to put his side ahead, cleared one effort from Filip Kiss off the line and only just failed to prevent Ben Turner's equaliser going in two minutes from the end.
Kuyt then showed a cool head to score a pivotal penalty in the shootout having watched Steven Gerrard and Charlie Adam miss to initially hand Cardiff the initiative.
"I was disappointed not to play from the start but you have to put that aside because the trophy is much more important than the 11 players on the pitch," Kuyt added.
"We have to do it all together and I think that is what we did. The most important thing was to believe and believe to the end.
"It was unbelievable to score a goal in extra time, having a great chance to decide a game in front of all those supporters who came to London.
"To score that goal was amazing and then to clear off the line maybe 30 seconds from the end of the game I thought 'This is it'.
"But then all credit to Cardiff, who worked their socks off and scored the equaliser just before the end and we had to take penalties.
"Again belief was the most important thing and I believed in myself and the team believed in themselves. I still had the feeling we had to fight until the end.
"I told Stevie when he missed his penalty 'Never mind, because we are still in it as we have a great goalkeeper. We just have to make sure we score our other penalties and we will win it'."