The New York Jets player has previously been linked to stars such as Katy Perry and Taylor Swift and was more recently said to be involved with Glee star Dianna Agron.
However, Tebow told People that he is not in a relationship right now.
"I'm still single," he said.
Tebow also suggested that he does not have time to date, saying: "I've got a lot going on these days. I'm busy."
Tebow has previously been linked to The Bachelor but later confirmed that he was "definitely not" going to appear on the show.
Last week, he laughed off the rumours surrounding his love life, admitting that he has often never met the people he is linked with.
"I'm sure they would be lovely!" he joked.
> Tim Tebow signs with Hollywood talent agency