Design Elements > Contact Listing > Contacts Info > Show Company

Security > User Profiles > User Profile > Members Profile > Company Display > Company / Public Name / Account

If you have the "Show Company" option enabled on a Contact Listing design element, but the Company Name isnt shown for a Contact, this is due to the (Members Profile > Company Display) option on the User Profile not being set to "Company / Public Name / Account".

If that option isnt set as such, the Account Name will be shown (if the Contact is associated to an Account).