The Bay of Bangkok also known as the Bight of Bangkok, is the northernmost part of the Gulf of Thailand

Gulf of Thailand

The Gulf of Thailand , also known in to Malays as Teluk Siam literally meant Gulf of Siam, is a shallow arm of the South China Sea.-Geography:...

, roughly extending from Hua Hin

Hua Hin

Hua Hin is a famous beach resort town in Thailand, in the northern part of the Malay Peninsula, some 200 km south of Bangkok. It has a population of 84,883 in an area of 911 km², and is one of eight districts of the Prachuap Khiri Khan province.Hua Hin is closely associated with the...

 to the west and Sattahip to the east. Three of the major rivers of central Thailand empty into the bay - the Chao Phraya

Chao Phraya River

The Chao Phraya is a major river in Thailand, with its low alluvial plain forming the centre of the country. It runs through Bangkok, the capital city, and then empties into the Gulf of Thailand.-Etymology:...

 and its distributary Tha Chin

Tha Chin River

The Tha Chin river is a distributary of the Chao Phraya river, Thailand. It splits near the province of Chainat and then flows westerly from the Chao Phraya through the central plains, until it mouths into the Gulf of Thailand at the province of Samut Sakhon....

, the Mae Klong

Mae Klong

The Mae Klong is a river in western Thailand. The river begins at the confluence of the Khwae Noi or Khwae Sai Yok and the Khwae Yai River or Khwae Si Sawat in Kanchanaburi, pass Ratchaburi Province and empties into the Gulf of Thailand in Samut Songkhram....

 and the Bang Pa Kong River

Bang Pa Kong River

The Bang Pakong is a river in east Thailand. The river originates at the confluence of the Nakhon Nayok River and the Prachinburi River at Pak Nam Yothaka in Amphoe Ban Sang, Prachinburi Province. It empties into the Gulf of Thailand in the northeastern tip of the Bay of Bangkok. The watershed of...

.

There are some island

Island

An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

s off the eastern shores of the bay, like Ko Sichang, Ko Lan

Ko Lan

Ko Lan is one of the Eastern Seaboard islands of Thailand.-Geography:Ko Lan is the largest of the "Near Islands", off south Pattaya. It is located at the SE end of the Bay of Bangkok, on the eastern side of the Gulf of Siam...

 and Ko Phai

Ko Phai

Ko Phai is the largest island in Mu Ko Phai , a small uninhabited archipelago belonging to the Eastern Seaboard Islands of Thailand. It is located about 21 km to the west of Pattaya. It is also mentioned as "Bamboo Island", the meaning of its name in Thai, in tourist guides...

.