The popularity of themed inflatable castles can vary depending on current trends, popular characters, and individual preferences. However, here are some themed inflatable castles that have been popular among children:

1 Princess Castle: Castles with princess themes are perennial favorites, featuring elements like tiaras, fairy tale motifs, and vibrant colors.

2 Pirate Ship: Inflatable pirate ship castles create an adventurous atmosphere with features such as pirate flags, cannons, and treasure chests.

3 Superhero Headquarters: Superhero-themed castles featuring popular characters like Spider-Man, Batman, or Superman can ignite children's imaginations and make them feel like heroes themselves.

4 Jungle Safari: Jungle-themed castles with inflatable palm trees, animals, and vibrant foliage provide an exciting and adventurous setting for children.

5 Under the Sea: Castles with underwater themes, incorporating colorful fish, seashells, and aquatic creatures, can create a magical underwater experience for children.

6 Outer Space: Inflatable castles with space themes, featuring rockets, planets, and stars, appeal to children's fascination with the vastness of the universe.

7 Sports Arena: Sports-themed castles, such as soccer, basketball, or baseball, are popular choices among children who enjoy engaging in active play and sports-related activities.

8 Fairytale Characters: Inflatable castles featuring beloved fairytale characters like Cinderella, Snow White, or Beauty and the Beast can bring favorite stories to life and create a magical experience.

9 Farmyard Adventure: Castles with farmyard themes, including inflatable barns, farm animals, and haystacks, can provide a playful and educational setting for children.

10 Dinosaur World: Inflatable castles with dinosaur themes, featuring various species of dinosaurs and prehistoric landscapes, captivate children's imagination and interest in these ancient creatures.

Remember that the popularity of themed inflatable castles can change over time, and it's important to consider the preferences and interests of the children who will be using them. Working with reputable inflatable suppliers can help you find the most popular and up-to-date options to suit your event or party.