In the first mishap, two persons were killed and a co-passenger was injured seriously as their car rammed into a stationary truck in Mallawan area of Fatehpur district, police said.
Nitesh Jaiswal and his friend Prateek Sharma died in the incident that took place on the GT road near Saura village, they said adding another passenger Ajay Sahu was admitted to the nearby hospital in a serious condition.
Meanwhile, 20 people, including five women, were injured in a collision between a bus and a jeep in Ballia district.
The injured were rushed to a nearby hospital from where nine of them with serious injuries were referred to the district hospital, police said, adding.
The incident took place when the wheel of the bus failed.