Sigma lens doesn’t fit EOS 7D

[Spoonjerm]

I just bought a sigma 35mm f1.4 for my canon 7D and it doesn’t fit. Was wandering if I could get an adaptor for it? 

[Tronhard]

Hi and welcome to the forum:

Sigma make lenses for many makes, are you sure the lens has a Canon EF mount?

[ebiggs1]

"I just bought a sigma 35mm f1.4 ..."

That is a fantastic lens. The best 35mm lens made for IQ. There are no adapters made nor are any needed if you bought the EF version. It will tell you that on the box it came in. Unless you have a keen eye looking at the physical mount, that is the only way to tell what mount you bought.