Wikimedia Commons has media related to Company logos.

To place a file in this category, add the tag ((Non-free logo|Company logos)) to the bottom of the file's description page. If you are not sure which category a file belongs to, consult the file copyright tag page. If this category is very large, please consider placing your file in a new or existing subcategory. Free files can be moved to the Wikimedia Commons.

In regard to uploading company logo images, please note the guidelines at Wikipedia:Logos. Two relevant guidelines state: "Logos that contain corporate slogans should be omitted in favour of equivalent logos that do not", and "Generally, logos should be used only when the company and its logo are reasonably familiar".