9-Ball and 8-Ball Pool is probably the biggest participation sport in Pattaya. If you fancy a game, most bars have a table or two where you can play for free or a minimal charge, and some very competent playing partners among the female bar staff.
Snooker is also a popular sport in Pattaya, especially among the Thais, who you will often see playing into the early hours of the morning in small open snooker halls.
If you take your snooker and pool seriously, there are several modern, well-equipped pool and snooker halls in Pattaya with professional-quality tables.
Megabreak Pool Hall is located on Soi Diana (Soi 13), off Second Road. They have tournament-class 9-foot pool tables set in a modern playing arena. There’s a chance to win big money in the regular men’s and ladies’ handicap competitions. Food and drink are available, along with big-screen TVs to entertain non-playing guests. Facebook page: https://www.facebook.com/Megabreak/
Double Kiss Pool Hall is located on 3rd Road. They have professional 9-foot tables, along with darts, food and drink, and big-screen TVs. Visit their Facebook page for opening times, prices, and information. Facebook page: https://www.facebook.com/doublekisspool/
S1 Pool Hall & Sports Bar is located on Soi Buakhao. This is a large complex with many pool tables and snooker tables along with darts, table tennis, and foosball. Food and drink are on site, and there are big-screen TVs and regular pool tournaments. Facebook page: https://www.facebook.com/profile.php?id=61558767711269
IQ Snooker & Pool Hall is located on Central Pattaya Road near the 3rd Road junction. According to their Facebook page they have 7 Joy Q8 Chinese pool tables (6 in the main hall & 1 in the VIP room), 3 full-size snooker tables, 2 Rasson Strong II snooker tables in VIP rooms & 1 Predator Apex 9ft table. Facebook page: https://www.facebook.com/IQClubPattaya/
If you want to play pool competitively there are also many pool leagues in Pattaya. Most bars will have a pool team in one or more of the Pattaya pool leagues.