Is Madara Sasuke's Brother?
Yes, Judging from what Hashirama said to Sasuke. He realises that Sasuke greatly resembles Izuna Uchiha (Madara younger brother). Also Sasuke is a son of Fugaku who was the leader of the Uchiha clan.

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Similarly, you may ask, who is the brother of Madara Uchiha?

Izuna Uchiha

Additionally, is Madara Sasuke's grandfather? They are blood relatives, because they all have Uchiha blood, and the Sharingan is proof of that. Madara was born waaaay before Sasuke or even Obito's time. When Obitio was in his teen years, Madara was old as hell and barely even alive.

Regarding this, how is Madara Uchiha related to Sasuke?

No the three are only related because they are all from Uchiha clan, another that might link Madara & Sasuke is that they are both reincarnation of Indra. Sasuke is the son of Fugaku and Mikoto. The three(Madara, Obito and Sasuke) are not related to each other.

Who is Sasuke's brother?

Itachi Uchiha

Related Question Answers

Who was Itachi's lover?

Izumi Uchiha (??????, Uchiha Izumi) was a kunoichi from Konohagakure and a member of the Uchiha Clan. She was a friend of Itachi Uchiha since their childhood, and was infatuated with him.

Who is Madara's father?

Who is Madara Uchiha?
editMadara Uchiha
Affiliation Konohagakure Akatsuki
Partner Obito Uchiha Black Zetsu
Clan Uchiha Clan
Family Tajima Uchiha (Father) Izuna Uchiha (Brother)
Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.