Under the new program that went into effect on Monday, visitors can stay in the country of South East Asia for up to 60 days.
Before, people with valid passports from 57 nations could enter without a visa.
The Thai economy is heavily dependent on tourism, although it has not fully recovered from the pandemic.
According to government data, Thailand saw 17.5 million foreign tourists arrive in the first half of 2024, a 35% increase over the same period the previous year. Still, the figures are negligible compared to pre-pandemic levels.
The majority of the guests were from Malaysia, India, and China.
During that same period, tourism generated 858 billion baht ($23.6 billion; £18.3 billion), or less than 25% of the government’s target.
Thailand welcomes millions of tourists each year, drawn by its golden temples, white sand beaches, scenic mountains, and exciting nightlife.
The updated visa-free policies are a component of a larger strategy to increase travel.
A new five-year visa for remote workers was also unveiled in Thailand on Monday, entailing a maximum 180-day annual stay.
