Yes! You can have multiple payment providers on Shopify. This can be useful if you want to offer your customers different payment options, or if you want to use different providers for different countries.
To add a new payment provider, go to the Shopify admin and click on Settings, then Payment providers. From there, you can click on the Add payment provider button and select the provider you want to use.
If you're using Shopify Payments, then you can also add a secondary payment provider. To do this, go to the Shopify admin and click on Settings, then Payment providers. From there, click on the Manage button next to Shopify Payments. On the following page, you'll see an option to add a secondary payment provider.