The membership follows two screening visits where experts investigates the zoos activities, focussing closely on animal welfare, conservation, research and education.
Membership to the EAZA will provide a boost for the future of the zoo.
The family-run park was opened to the public in 1950 by the Bryan family, when George and Vera Bryan OBE converted 80 acres of derelict land into a family attraction.
The site, which is still owned and run by second and third generation family members, combines thrill rides with a conservation zoo plus catering and conference facilities.
Chris Mitchell, zoo manager at Drayton Manor Zoo, said: “We are delighted with our EAZA membership and I think it is a great reflection of the work we do here, and how we go above and beyond to make sure all the animals’ needs are met.
“Sadly, animals in the wild are becoming extinct at an alarming rate and zoos not only narrate this story but also help connect people with nature.
“Zoos carry out vital conservation work and are key to safeguarding animals and habitats for future generations.”