Phra Nakhon Si Ayutthaya province

Phra Nakhon Si Ayutthaya
พระนครศรีอยุธยา
Other transcription(s)
 • Chinese大城
dua7 sian5 (Teochew Peng'im)
Tōa-siâ (Hokkien POJ)
From left to right, top to bottom: Wat Chaiwatthanaram at night; Ladchado market in Phak Hai district; Wat Phutthaisawan; Luang Pu Thuat statue at Maharat Buddhist Park, Maha Rat district; Prasat Nakhon Luang, Nakhon Luang district; Old steam locomotive at Ban Phachi Junction
Nicknames: 
Krung Kao (Thai: กรุงเก่า)
(The old capital)
Ayutthaya
Mottoes: 
ราชธานีเก่า อู่ข้าวอู่น้ำ เลิศล้ำกานท์กวี คนดีศรีอยุธยา เลอคุณค่ามรดกโลก
("The old capital. A land flowing with milk and honey. Excellent literature. The good people of Ayutthaya. The treasured world heritage.")
Map of Thailand highlighting Phra Nakhon Si Ayutthaya province
CountryThailand
CapitalAyutthaya
Government
 • GovernorNiwat Rungsakorn
Area
 • Total
2,548 km2 (984 sq mi)
 • Rank64th
Population
 (2024)
 • Total
822,720
 • Rank30th
 • Density323/km2 (840/sq mi)
  • Rank11th
Human Achievement Index
 • HAI (2022)0.6770 "high"
Ranked 3rd
GDP
 • Totalbaht 404 billion
(US$13.3 billion) (2019)
Time zoneUTC+7 (ICT)
Postal code
13xxx
Calling code035
ISO 3166 codeTH-14
Websiteayutthaya.go.th
Phra Nakhon Si Ayutthaya Provincial Administrative Organization
องค์การบริหารส่วนจังหวัดพระนครศรีอยุธยา
Interactive map of Phra Nakhon Si Ayutthaya Provincial Administrative Organization
Government
 • TypeLocal administrative divisions
 • BodyPhra Nakhon Si Ayutthaya Provincial Administrative Organization
 • PresidentSomsong Phancharoenworakul
Websiteaypao.go.th

Phra Nakhon Si Ayutthaya, or locally and simply Ayutthaya (historically Iudea, Iudiad, Iudia, Juthia or Judia), is one of the central provinces (changwat) of Thailand. Neighboring provinces are (from north clockwise) Ang Thong, Lopburi, Saraburi, Pathum Thani, Nonthaburi, Nakhon Pathom and Suphan Buri.