Felix has been the resident pet at Huddersfield railway station in West Yorkshire since 2011, when she was brought in to catch mice.
She has now been given a high-vis vest and made Senior Pest Controller.
A cat flap has also been built at the ticket barrier to allow her platform access.
Felix's success has been covered by newspapers in Taiwan, the Netherlands and Hong Kong.
The story saw a surge in popularity after the Huddersfield Examiner pounced on Felix's "purr-motion".
At the time of writing, a page for Felix has amassed over 20,000 'likes' on Facebook.
A First TransPennine Express spokesman said: "Felix came to the station when she was nine weeks old five years ago.
"We haven't kept a mice tally, but we think she's caught three recently."
The station said the cat was also a "natural" at chasing off pigeons on the station's platforms.
Felix is not the first "station cat" to find global fame - Tama, a stray which was made a station master in western Japan, was credited with turning a loss-making railway company around thanks to the number of tourists it attracted.
After Tama's death last June, thousands of people attended a Shinto-style funeral where the cat was elevated to the status of a goddess.

The pontiff called for reconciliation as he addressed the Friendship Stadium in Cotonou, Benin's main city in the heartland of the Voodoo religion.
The 84-year-old handed over a document showing how doctrine in the Roman Catholic church could heal rifts.
The liturgy was delivered in at least 10 African languages and also broadcast in St Peter's Square, Vatican City.
Many in the crowd dressed in colourful robes emblazoned with the Pope's image, and some of those who had not made it inside, kneeled and prayed in the car park.
The Pontiff urged them "to be attentive to the cry of the poor, the weak and the outcast" as well as "those affected by Aids or other illnesses".
His spiritual vision for Africa - contained in a formal treatise - has been called a "papal road map" for the continent.
It applies doctrines like turning the other cheek and forgiveness to try to address the conflicts in Africa, such as those fuelled by ethnic divisions.
By Virgile AhissouBBC Afrique, Cotonou
Voodoo is recognised as an official religion in Benin, followed by some 40% of the population.
People across West Africa, especially Togo, Ghana and Nigeria hold similar beliefs.
Voodoo has none of the negative connotations it has in the West and many of those who are officially Christian or Muslim also incorporate some Voodoo elements into their beliefs, especially in times of crisis.
But Voodoo is more than a belief system, it is a complete way of life, including culture, philosophy, language, art, dance, music and medicine.
Voodoo priests ask the gods to intervene on behalf of ordinary people but local adherents stress that they have nothing to do with sorcery or black magic.
People here do not stick needles into dolls to cause misfortune to their enemies, as you see in some Western films.
It also calls for good governance and the abolition of the death penalty, and condemns abuse of women and children.
The document was drawn up two years ago at a meeting in Rome by Catholic bishops from all over Africa.
Witchcraft warning
On Saturday, the second day of his visit to Benin, the Pope travelled to the city of Ouidah where he called for respect for traditional beliefs but also issued a warning against witchcraft.
Voodoo is widely practised in Benin, where it has none of the negative connotations often associated with it in Western countries.
The Pope's first public engagement on Friday was at the presidential palace in Cotonou, where he again issued an appeal for reconciliation in front of politicians, diplomats and Church figures.
The rise of Catholicism in Africa is in sharp contrast to Europe, which has seen a steep fall in the number of active faithful.
A newly promoted train station cat has become a media sensation after her career advancements were followed from around the globe.
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Pope Benedict has said an open-air Mass for tens of thousands of people as he wrapped up his three-day African tour.