Can I find several names at once?

I have a list of 900 names in excel and I need to find certain individuals by last name. I can get a list of each person I need to find...lets say 20 last names. These names are in the 900 but I would need to use the find feature and look one up at a time and this will take forever. Let’s say sheet one has the 900 names and sheet two has the 20 names. Can I find the 20 names in sheet one quickly or do I have to use the find feature to search one person at a time on the first sheet with 900 names?

Thanks