MOSCOW — Gay rights activists plan to defy President Vladimir Putin and pressure Olympic sponsors by getting athletes to protest a Russian ban on homosexual “propaganda” during the Sochi Games.

Athlete Ally, based in New York, said it’s in talks with Australian snowboarder Belle Brockhoff and Canadian alpine skier Mike Janyk as well as two others about wearing logos referring to “principle six” of the Olympic charter, which bans all forms of discrimination.

“There is a tremendous opportunity because the world is going to be watching,” Hudson Taylor, Athlete Ally’s founder and executive director, said by phone on Nov. 27. The sponsors will have “no choice” but to respond, Taylor said.

Coca-Cola, the world’s largest beverage company, and McDonald’s, the biggest global restaurant chain by sales, have already endured protests in the United States over their sponsorship of the Sochi Games, as has Procter & Gamble, the world’s largest consumer-products maker.

All Out, a New York-based gay rights group with 1.9 million members worldwide, hired trucks in October to circle Coca-Cola’s headquarters in Atlanta with signs urging the drink maker to call on Russia to repeal the law signed by Putin in June.

By calling attention to the International Olympic Committee’s own mission statement, athletes will be able to show their disdain for the law, without violating either that legislation or an Olympic ban on political actions during the Games in February, Taylor said.

Athlete Ally is also in talks with some teams about wearing “Principle 6” clothing, he said. Olympians in some competitions can sign sponsorship deals separate of the national squad. Spectators too will be able to buy the apparel and wear it in Sochi.

“I want to compete as myself so that people see I am me,” Brockhoff, who revealed in September that she is a lesbian, said in a phone interview Nov. 30 on a break from training in Austria.

She said she would like to wear the red “Principle 6” clothing in the Olympic Village outside of competitions but is taking legal advice before committing.

Coca-Cola, McDonald’s and Procter & Gamble, together with France’s Atos, Dow Chemical Co., General Electric Co., Panasonic Corp., Samsung Electronics Co., Visa Inc. and the Omega luxury watch brand are the 10 main sponsors of the Games.

Gerhard Heiberg, head of marketing for the IOC, said in September he was being “pushed” by several sponsors who were worried about the likelihood of protests during the Games.

“I think this could ruin a lot for all of us,” Heiberg said at a meeting of the Olympic body in Buenos Aires. “We have to be prepared.”

Russian Sports Minister Vitaliy Mutko said in August that athletes and spectators attending the Feb. 7-23 event will face arrest, fines and deportation if they violate the law, which officials say is intended to protect children. The maximum punishment for foreigners is 15 days in prison.

A month later, Putin said in an interview with the Associated Press and Russia’s state-run Channel One television that he’ll “faithfully follow” Olympic principles and prohibit any discrimination on the basis of race, gender or sexuality. Putin, 61, said the U.S. and other countries were trying to undermine Russia’s first Winter Olympics by harping on the issue.