Julie Rhodes, from Belle Isle, was inspired to start hanging the coats on a Leeds Bridge for those in need to collect after seeing a Facebook post about a similar project in Cardiff.
The 53-year-old put out a call on social media for unwanted coats earlier this month.
"I've had loads of people giving bags of coats. Even pubs have got involved," said Julie, who has been picking up the donations herself before taking them to the bridge.
"I was not expecting it all.
"It's quite sad to see so many homeless people," added Julie, who works in Leeds at a special needs school.
"My heart goes out to them."
Julie estimates she has hung around 50 coats on the bridge, and is now covering them with plastic bags to protect them from the elements.
She said she hoped they were going to the "right people" after a video emerged of people taking the coats en masse in Scarborough.
"I just think if you can reach out then it's a good thing to do," she added.
Julie's actions have sparked a warm reaction on social media.
Jaz K B said: "These are free coats for anyone who needs them on Leeds Bridge. If you come across anyone who might need one please take one for them.
"If you have one to give please help. Best feeling to help others.
"People are innately good."