Thailand has both freshwater and saltwater fishing. Thai freshwaters are renowned for their many world record catches, and the saltwaters for the large number of species.

Thailand's saltwater fishing is dominated by the waters surrounding Phuket. The Racha Islands offer a wide variety of fish species. South-west of Phuket lies the continental drop-off for some serious deep sea fishing. Marlin, giant trevally, tuna, swordfish, barracuda, mahi mahi and sailfish are some of the species likely to be caught.

The Gulf of Thailand also has a wide range of fish. It is generally warmer and less saline than the Andaman coast. In the north of the gulf off the coast of Pattaya and near Trat and Koh Kut, there are large sailfish. Further south, of the islands of Koh Samui and Koh Phangan, there are also eagle rays and barracuda.

For the fishermen who do not want to go to sea there are plenty of freshwater fishing lakes and parks around Thailand. Around Bangkok and Pattaya there are numerous lakes and reservoirs well stocked with giant carps and catfish up to 30 kgs, providing great fishing experience. In the north of the country, near Chang Mai there are several lakes with large catfish, and in the south, Phuket has lakes with pacu, giant gourmi and Indo-Pacific tarpon.

Fishing is a relatively new sport in Thailand and has been built around the tourist industry. As a result, there are few fishing clubs. News and information on local events is available from the local fishing parks and tour operators.

Permits are not required in Thailand for rod fishing. However, there are regulations regarding fishing in certain locations and for some endangered species. When fishing at a fishing park or on a fishing tour, any permits needed should be arranged by the tour operator. In respect of saltwater fishing, there are many species that may not be caught, for a full list contact the Thai Department of Fisheries.

Fishing in Thailand is a year-round sport. However, different fish are available at different times of the year. At Phuket, November to April is good for sailfish, giant trevally and tuna, while May to October is good for mahi mahi and wahoo. In the Golf of Thailand October to March is generally the best fishing. Freshwater fishing is possible year round.