Teams such as Tottenham Hotspur, Wales and Italy wear kits supplied by Kappa but campaigners for democracy in Burma claim that it is inadvertently helping the country's brutal military regime by buying products made there.
The Burmese military regime has been heavily criticised for its human rights record and for the way it has suppressed pro-democracy movements.
Textile exports are one of the biggest sources of revenue for the Burmese military regime, which is believed to have killed thousands of people in its suppression of democracy. Campaigners claim that last year alone, £50m worth of textiles were imported to Britain from Burma.
Last month, the Burma Campaign, the British-based pressure group campaigning for democracy in Burma scored a notable victory after JJB Sports, the country's largest sports retailer agreed to withdraw stock manufactured in Burma.
Campaigners say they have also sent hundreds of letters and emails to Kappa's headquarters in Italy asking for it to withdraw from Burma.
Mark Farmaner, campaigns officer for the Burma Campaign, said: "We have contacted the company several times and have not received any response.
"If they are willing to show us that they have pulled out of Burma then we will call off our boycott."
But Kappa says it stopped manufacturing products in Burma earlier this year and that it no longer has any business links in the country.
A spokesman for Kappa GB said: "We no longer source any products from Burma. Our headquarters in Turin are responsible for sourcing products around the world. We stopped doing business in Burma at the start of this year. It became clear that we had to move to another country."
Mr Farmaner, however, claims to have found Burma-made Kappa products in a London West End store last month.
"If Kappa are no longer manufacturing in Burma then we want to see the evidence," he said. "We are still finding their products in British stores that have been made in Burma.
"In the meantime, our message to football fans and all sports fans is contact Kappa and tell them that you are boycotting their goods.
"The money that is being made by Burma is being used to pay for rape, torture and the suppression of human rights."
The campaign to boycott Kappa is being supported by pro-democracy campaigners within Burma who have also called for sanctions against other specific products that generate high revenue for the military regime.
Last Friday, Aung San Suu Kyi, the country's leading pro-democracy campaigner, who has been detained for a total of 14 years, was once again put under house arrest.
A spokesman for JJB Sports, which was founded by former Blackburn Rovers footballer David Whelan said: "The company accepts there was an oversight [on stocking Burmese-made products] which will be remedied.
"We have been in contact with the Burma Campaign and have reiterated our commitment not to purchase goods that have been manufactured there."
· Additional reporting by Jason Rodriguez
Made in the far east
Nike
Manufactures goods mainly in China, Indonesia, Thailand and Vietnam
Adidas
Goods mainly manufactured in Indonesia, Thailand and other parts of the far east
Reebok
Vietnam, Thailand and a number of products manufactured in Britain
New Balance
China, Vietnam and Mexico
Umbro
Footballs made in Pakistan. Other factories based in the far east
