The 24-year-old becomes the ninth summer addition and arrives at Molineux on a three-year-deal with the option for a further year.
Gladon has played his entire career in the Dutch leagues; earning his football education and then his first professional appearances at Sparta Rotterdam.
The forward then spent a year on loan at Eerste Divisie side, FC Dordrecht before returning to his parent club for a further season.
Gladon then moved and spent a season with Heracles Almelo where he netted four times in his 24 appearances.
Speaking after joining Wolves, the striker said: “I’m very happy to be a Wolves player.
“I’m very impressed with the facilities. The difference between here and the Netherlands is big. It’s fantastic.
“I spent some time at the stadium yesterday and it looks fantastic. I can’t wait for our first home game.
“It was an easy decision to make to come here.
“The people are very nice, it’s a good club for me to be at and I’m very happy with it."
When asked to describe himself as a player, Gladon responded: “I’m a striker that likes to work hard, I think my speciality is heading the ball.
“Hopefully the supporters will see what my qualities are.
“I’ve been asked to do my best for the club, to work hard.
“There are a lot of matches in the season so there will be chances and I hope to be important for the club.
“In my eyes, England is the country of football and if you can play there then it’s fantastic.
“Of course I would like to play in the Premier League, it’s the first league in England. I hope we can be promoted to the Premier League this year."
During his time at Sparta Rotterdam, the forward was coached by former Wolves defender John de Wolf and Gladon explained how de Wolf helped make up his mind.
“I’m a striker but John DeWolf was my defensive trainer at my old club, Sparta Rotterdam," he said.
“He’s a very nice guy. He told me some stories about the club and said if you get the chance to go to Wolves then you must take the first aeroplane – don’t think about it."
