both his parents died too soon.He didnt evn know about them before.So although he did love them he views Iruka as a father-figure so I think Iruka is the most important person to him.
And he loves all of them for sure,especiall that stupid Sasuke(I dont like that stuff)

I believe naruto loves Sasuke more than the others!From the moment sasuke left konoha,naruto has been trying his best to bring him back to the village!!!plus i'm a narusasu fan!!!!The best couple in Naruto!!!

Yeah I see your point.Sometimes I wonder if Naruto is gay or not haha,plus I dont like Sasuke so...

I think Naruto cares about Sakura the most! :)

I think Jiraiya he has spent more time with Jiraiya and you got to see how there relationship grew and when Jiraiya died you could tell how much Jiraiya meant to him and just the way he acted towards him they seemed like family!!!!

Sai is so hot.... I MEAN! yea this is pretty simple i really do think that he doesnt love anymore than her maybe not in a girlfriend way but really they both know what each other are going through this was quite easy for me =] also kakashi and jiraiya but not much as sakura if you as me

iruka by far!!!! sakura is just a ..... actually maybe i shouldn't say!

well sakura is his love i mean comeon !

Sakura is winning?!:O,well the thing that naruto always says that she likes her doesn't mean she is the most important person to him!Let me see,who's the one that naruto does everything about him?yes sasuke!What is the most important purpose naruto want to accomplish?Oh yes,to bring back sasuke!Which naruto consider his first and more important bond?His bond with sasuke!Who he's been thinking about?Who he's been training for?SASUKE!!!And he said when sakura confessed to him to make him give up on sasuke that he doesn't want to bring back sasuke just because of his promise to her and when sai told him the truth he fell down unable to breath!it's hard for him to make a decision about sasuke even now that sasuke has fallen deeply into the darkness!!!

Well she IS his wife now, so it's only natural.