The female suicide bomber blew herself up at the entrance hall of the station, said officials.
While the BBC put the toll at 14, according to Russia's Ria Novosti, between 13 and 18 people were killed and up to 50 more were wounded in the blast near the metal detectors at the Volgograd-1 train station's front entrance at 12:45 p.m. Russian time.
"Initial indications are that the blast was set off by a female suicide bomber," said the National Anti-Terror Committee in a statement, quoted BBC.
This is second such strike in the city where in October another female suicide bomber had killed six people in a bus.
Meanwhile, NATO condemned the attack.
NATO Secretary General Anders Fogh Rasmussen in a statement said: "I strongly condemn the terrorist attack on a railway station in Volgograd, Russia, which killed and injured many people."
"I offer my condolences to the families and loved ones of the victims, and wish a speedy recovery to those who were wounded," he said.
"There can be no justification for such barbarous attacks. NATO and Russia stand together in the fight against terrorism, including by working together on technology to prevent attacks on public transport systems. We will continue to cooperate to improve the safety of our citizens, and the security of our countries," he said.
--IBNS (Posted on 29-12-2013)