Yes, there are several podcasts that interview successful small business owners. Here are a few popular ones:

1. "How I Built This" by NPR: Hosted by Guy Raz, this podcast features interviews with entrepreneurs and innovators who have built successful businesses. It covers a wide range of industries and provides insights into the challenges and triumphs faced by these business owners. Some notable episodes include interviews with the founders of companies like Airbnb, Spanx, and Patagonia.

2. "The Tim Ferriss Show": Tim Ferriss, renowned author and entrepreneur, interviews world-class performers from various fields, including small business owners. While the podcast covers a broad range of topics, many episodes delve into the strategies and stories behind building successful businesses. Notable interviews include Seth Godin, Tony Robbins, and Peter Thiel.

3. "The Smart Passive Income Online Business and Blogging Podcast" by Pat Flynn: Pat Flynn shares his own experiences and interviews other successful online entrepreneurs, providing valuable insights and strategies for building and scaling small businesses. The podcast covers topics such as passive income, online marketing, and entrepreneurship. Notable episodes include interviews with entrepreneurs like Gary Vaynerchuk and Ramit Sethi.

4. "The Side Hustle School" by Chris Guillebeau: This daily podcast focuses on inspiring and practical stories of people who have started successful side hustles or small businesses. Each episode is short, around 10 minutes, and provides actionable tips and advice. The podcast features a wide range of entrepreneurs and their unique business ideas.

5. "The School of Greatness" by Lewis Howes: While primarily focused on personal development and growth, this podcast often features interviews with successful entrepreneurs who share their journeys and insights. Lewis Howes has interviewed small business owners like Marie Forleo, Daymond John, and Sara Blakely, providing valuable lessons and inspiration.

These are just a few examples of podcasts that interview successful small business owners. Each of them offers unique perspectives, stories, and strategies that can be beneficial for aspiring entrepreneurs.