The World Cup winner was full of kind words for the former England captain, ahead of his final home appearance this weekend.
Labelling the Reds captain one of the best to ever feature in the Premier League, Henry revealed that he is a massive fan of Gerrard, and is dreading the midfielder's exit to La Galaxy this summer.
"To see him leave the league is going to be a sad day," the former striker told Sky Sports. "I'm not a Liverpool fan but I'm a football fan; to see him not wearing that red shirt and stepping out of the tunnel at Anfield is going to be weird.
"He's one of the best players that ever played in this league."
The Frenchman also paid special credit to Gerrard for his long service to Liverpool, and said that the ex-England man's failure to win the Premier League title is of little importance when he has contributed as much as he has to Liverpool and the Premier League in general.
Henry of course was himself one of the league's best players in an outstanding period at Arsenal that ended up with him becoming the club's top goalscorer of all time. After a spell at Barcelona, the 37-year-old also featured in the MLS, where he played for four years at the New York Red Bulls.
"Him playing for just one club in this country is special," Henry added. "I know he didn't win the league - I know he would have wanted to win it, especially with Liverpool - but for me it doesn't really matter.
"I have maximum respect for him staying at one club but also the way he behaved on and off the field; his goals, the way he drove his team and made everyone believe they could win even if they were losing.
"Yes, he didn't win the league but sometimes a player has won the league and not given as much as he did."