The filming of the TV series "Alien: Earth" primarily took place in Thailand across multiple notable locations. These locations include:

• Bangkok: Filming was done in The Studio Park in Bangkok for interior scenes and large set pieces, as well as utilizing the city's futuristic and neon-lit urban landscapes.
• Surat Thani: Known for its pristine natural beauty including forests, waterfalls, and mountains.
• Krabi: Famous for its stunning beaches, limestone karsts, mangroves, and islands such as Railay Beach, Ao Nang, and the Phi Phi Islands.
• Phuket: Featured for its beaches like Patong Beach, Kata Noi, Promthep Cape, and nearby islands such as the Coral Islands and Racha Islands.
• Phang Nga: Renowned for dramatic landscapes with limestone cliffs, clear waters, caves, and locations like Phang Nga Bay and James Bond Island.

The production utilized Thailand’s diverse terrains and studio facilities over 123 shooting days, making it the highest-budget foreign production in Thailand to date. This blend of futuristic urban backdrops and lush natural environments was chosen to reflect the story’s setting—a future Earth with a neo-Thai aesthetic.