This is a list of Sahaba not giving bay'ah to Abu Bakr. The Sahaba were the companions of Muhammad; bay'ah is the Islamic term for a formal oath of allegiance.
After the death of Muhammad, Abu Bakr came into power following the meeting at the Saqifah of Banu Sa'ida, becoming the first Caliph.
While no one source lists all these people, this article lists the individuals as mentioned in a multitude of sources, and provides the sources where each name appears, and the context in which they are mentioned.
Additionally, not all sources state how long each individual withheld his bay'ah. Shi'as have maintained that Ali never paid allegiance to Abu Bakr, and there is support for this in both Shi'a and Sunni historical texts. A few authentic Sunni sources have narrated that Ali gave bay'ah to Abu Bakr the next day. Abu Bakr was given bay'ah in the Saqifah of Banu Sa'ida on Monday a few hours after the death of Muhammad, this was a private bay'ah given to Abu Bakr by a few Sahabah including Umar ibn al-Khattab, Abu Ubaidah ibn al-Jarrah, Sa'ad ibn Ubadah and other prominent members of the Khazraj tribe. Then the next day, Abu Bakr got on the minbar and Umar announced that Abu Bakr is Caliph and that all the Muslims should give him bay'ah. A few Sunni sources, however, have suggested that Ali withheld for only six months. The details of whether Ali ever consented to pay allegiance to Abu Bakr is not mentioned in the sources themselves, but are generally taken as added by latter interpreters. Shi'a ideology maintains that Ali was forcibly taken to Abu Bakr, who later staged a mock allegiance ceremony to consolidate his power. The vast majority of learned scholars and historians accept that there was no force applied to Ali to gain allegiance. Given that Ali was from the family of the Prophet and quite a strong man he could have easily forced this issue to be resolved by way of arbitration.
A Sunni historian Al-Yaqubi mentions in Tarikh al-Yaqubi,
Banu Asad
Zubayr ibn al-Awwam