Welcome to the Shopify Community. I'll need to know some more information about what you are trying to achieve to help make some suggestions. What theme are you using? How many sponsors do you have, and where / how would you like them to be displayed on your website? Any examples would be great.
Some themes offer a logo list feature, such as theses themes mentioned by Out of the Sandbox. Some themes don't have this feature built in, but could be customized on your theme by a Shopify Expert. However, other than a logo list feature, different sections from within the theme editor may work for you.
Once I have more information about your theme, and your goal, we can take it from there!