While instructing Naruto, he tells him that it's a difficult ninjutsu to learn and even the Fourth Hokage couldn't do it. He then tells Naruto he believes he's the only one who surpass the Fourth. It was an obvious giveaway that Kakashi was aware Naruto and Minato were father and son .
Yes , he knew that Naruto was Minato's son!
During 4th Great ninja war , all Hokage's were reanimated and that's when everyone came to know about this . At end , Naruto does gets a good chance to give message for his mother through his father. So that's when everyone came to know about this. After all, his son of 4th Hokage .
Kakashi never thought of Naruto as his son or grandson. ... During Rasenshuriken training, Kakashi says that he's starting to like Naruto.
The only persons that knew about the truth were: Jiraiya, Sarutobi , maybe Kakashi (we saw a lot of time that Kakashi imagines he's teacher and mentor in Naruto, maybe he realized the relationship, but he didn't know that from the beginning), and a few ANBU members who were at that place when Naruto was born.
"The Fourth Hokage" (四代目火影, Yondaime Hokage) is episode 168 of the Naruto: Shippūden anime.
Even Naruto didn't learn about his father's identity until he was about to release the Nine-Tails and Minato revealed himself. When Naruto became the Seventh Hokage, it's no secret that he's Minato's son .
Also Naruto also didn't know his parents so that didn't help. His birth was kept a secret to many, but those who knew disliked him. They knew that Naruto was Minato's son because of the similarities in features , but they let their hatred for the Nine tails lead them to dislike Naruto too.
While instructing Naruto, he tells him that it's a difficult ninjutsu to learn and even the Fourth Hokage couldn't do it. He then tells Naruto he believes he's the only one who surpass the Fourth. It was an obvious giveaway that Kakashi was aware Naruto and Minato were father and son
Kakashi was still in his mid teens when Naruto was orphaned. He also had serious PTSD, and one could argue that he wasn't ready to be a Sensai either, by the time Naruto was near his teens. Jiraiya had a vendetta. He, in his own way, took care of Naruto , from the shadows.
However, Kakashi was always impressed with Naruto's growth, stamina and abilities and admires Naruto as a unique ninja. Kakashi also recognised many similarities with his childhood teammate Obito. Personality and goals to be hokage were very much the same.
Right after his fight with Kakashi, Itachi claims that he is looking for the “The Legacy of the Fourth Hokage…” The second time in the series is in Part 2, after Itachi's death. This is Edo-Itachi openly mentioning Naruto's parentage in a conversation. So, yes, Itachi knew about Naruto being Minato's son.
What if everyone in Konoha knew Naruto was Minato's son? ... People would still resent him for being the jinchuriki of Kurama , but they would watch their words in public, and Naruto would be all around taken care of. He would have less of a reason to be Hokage, and more reason to resent the villag
Yes, he knew that Naruto was Minato's son !