Yes, you can advertise on Apple Podcasts. There are a few ways to do this:

1. Direct Sponsorships: You can directly sponsor a podcast. This is usually done by contacting the podcast host or producer and negotiating a deal. The advertisement can then be read by the host during the podcast.

2. Podcast Advertising Networks: These are companies that connect advertisers with podcasters. They handle the negotiation and placement of ads. Some popular podcast advertising networks include Midroll, AdvertiseCast, and Authentic.

3. Programmatic Advertising: This is a more automated form of advertising where ads are bought and sold through an automated bidding system. This can be a cost-effective way to reach a large audience.

Remember, it's important to choose a podcast that aligns with your brand and target audience for the most effective advertising.