A zoo keeper has been taken to hospital after she was head-butted by a giraffe at Sydney's Taronga Zoo.

The incident occurred during a feeding session in an enclosure at the zoo on Friday.

The woman was taken to hospital but cleared of serious injury, the Nine Network reported.

She has since been released.

The incident comes just months after zoo keeper Lucy Melo was crushed by an Asian elephant calf, leaving her in a critical condition in hospital.

A spokesman from Taronga Zoo said it was a minor incident and the woman wasn't injured.

"One of the giraffes bumped the keeper on the head," he told AAP.

"She was fine but we have very strict protocols about anything like that."

He said she was sent to hospital purely as a precaution and she was not admitted.

"We called an ambulance and had paramedics check her and they gave her the all clear," the spokesman said.

"As further precaution the manager just asked if she could be taken to hospital."

He said occasionally giraffes move their heads around and she was bumped by one of them but she's fine.