Some of the best marketing podcasts are:

1. Call to action
2. Social media marketing podcast
3. Marketing over coffee
4. Social pros podcast
5. Success made simple
6. HBR IdeaCast
7. Perpetual Traffic
8. Copyblogger FM

Source: https://www.forbes.com/sites/henrydevries/2018/08/20/the-eight-best-marketing-podcasts/?sh=5e1207637b00