Will a Sigma 17-70mm F.28-4.5 DC Macro HSM Lens autofocus on a Nikon D3100 body?

Will a Sigma 17-70mm F.28-4.5 DC Macro HSM Lens autofocus on a Nikon D3100 body?

Added (1). F2.8-4.5*

Sorry typo.

If its hsm then definitely it'll auto focus with any dslr

Yes, just make sure you get it in Nikon fit.

Sigma lenses that have the "HSM" marking, and that are Nikon mount lenses will auto focus on the D3100. HSM means hyper sonic motor, that means the lens has a motor.

Its and HSM lens so yes it will autofocus.