Salah's season exploits have reportedly attracted the attention of Real Madrid, and Henderson believes the former Chelsea frontman deserves to be compared to some of the best players in world football.
He said: "Messi and Ronaldo have done it at that level for 10 years plus, but Mo is good enough to stay at this level and keep improving.
"Definitely this season in terms of the way he's played, the goals he's scored and the impact he's had on games, means he's up there with the best."
Henderson continued: "He came in during the summer, settled in really well during pre-season and straight away we knew we had a top player.
"He was amazing in training and during the pre-season games and has continued that form throughout the season.
"He's been fantastic on and off the field. When he joined from Roma, we expected him to be good but he's gone above and beyond that."