The kitten, which has black fur and adorable white socks, was spotted wandering around the bus by a member of the public.
The kitten has since been named Ticket by animal rescue officers and is being kept safe and sound at an SSPCA animal rescue centre in Edinburgh.
The SSPCA released a statement reading: “Scotland’s animal welfare charity was alerted by Lothian Buses on Thursday (10 July) after the feline was spotted by a lady on the number 3 service.”
“The black and white kitten, estimated to be around seven weeks old, is now in the care of the Scottish SPCA’s Edinburgh and Lothians Animal Rescue and Rehoming Centre in Balerno.”
“He has been nicknamed Ticket.”
Animal Rescue Officer Connie O’Neill said, “A member of the public alerted the bus driver after she spotted Ticket wandering around the bus with no owner in sight.”
“We think it's very likely Ticket was abandoned but we also can’t rule out the possibility someone may have been transporting him and left him behind when they got off the bus.”
“If anyone recognises this little guy or knows who he belongs to, we’d urge them to get in touch.”
“Ticket is in good condition and is really friendly. If we’re not able to return him to his owner, we’ll find him a loving new home.”
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Abandoning an animal is an offence under the Animal Health and Welfare (Scotland) Act 2006 and anyone found guilty of doing so can expect to be banned from keeping animals for a fixed period or life.
Anyone with information is being urged to contact the Scottish SPCA Animal Helpline on 03000 999 999.