Halloween is celebrated in many countries around the world, although the specific form the holiday takes varies greatly from one country to the next. Here is a list of some countries that celebrate Halloween:

• Australia
• Belgium
• Czech Republic
• Dominican Republic
• Greece
• Hong Kong
• India
• Italy
• Japan
• Mexico
• Philippines
• Poland
• Romania
• Saudi Arabia
• Scotland
• Singapore
• Spain
• Sweden
• Thailand
• United States
• Wales

Its worth noting that Halloween is not celebrated in every country, and in some countries, it is overshadowed by other holidays or celebrations. Additionally, some countries have their own equivalent of Halloween, such as Chinas "Ghost Month".