Yes, but woolly mammoths were on the smaller side. Steppe and Columbian mammoths were bigger, as were (longer ago) Mammuthus meridionalis. https://en.wikipedia.org/wiki/Mammoth#Description

Evolutionarily though, Indian elephants are more closely related to mammoths than either are to African elephants.

Elephants are now pretty unique, but there were many more related species in the past. Most of the big animals in general were killed off, many with no big relatives remaining.