Abu Hatim al-Razi: Trustworthy
Abu Hatim ibn Hibban al-Busti: He was one of the leaders of his time in knowledge, virtue, memorization, piety, and Sunnah
Abu Zar'a al-Razi: Yunus ibn Ubayd is more beloved to me in Hasan than Qatada, because Yunus is from the companions of Hasan, and Qatada is not from the peers of Yunus, and Yunus is more beloved to me than Hisham ibn Hassan
Ahmad ibn Hanbal: Trustworthy
Ahmad ibn Shu'ayb al-Nasa'i: Trustworthy
Ibn Hajar al-Asqalani: Trustworthy, Upright, Excellent, Pious
Al-Dhahabi: One of the Imams of Basra, from the righteous scholars
Jalaluddin al-Suyuti: One of the flags
Sufyan ibn Husayn: Trustworthy
Salamah ibn 'Alqamah al-Tamimi: I sat with Yunus ibn Ubayd and could not find a word to criticize him for
Ali ibn al-Madini: Yunus ibn Ubayd is more reliable in Hasan than Ibn 'Awn
Muhammad ibn Sa'd Katb al-Waqidi: Trustworthy, much narration
Hisham ibn Hassan al-Qurashi: I have not seen anyone seeking the Face of Allah with knowledge except Yunus ibn Ubayd and Ibn 'Awn, they met and discussed the lawful and the unlawful, so both of them said: I do not know a dirham in my wealth that is lawful
Yahya ibn Ma'in: Trustworthy