The research about Thonburi’s Performing Arts in the 21th Century is aimed at studying the art of performing arts. It is to study the model of the cultural context of the Thonburi side in the 21st century and to create a database for searching documents. Multimedia publish information to educational and community agencies in Thonburi. This research uses qualitative research method. Data are collected from research papers and related texts, field observation with non-participant and focus group, in-depth interview and group interview from professional, local philosopher, District Director, Chairman of the Cultural Council, Head of Faculty, performers, musicians, Presidents of the Community and villagers. Research found that the traditional art of performing arts is inherited by oral transmission of family kinship. Traditional art performances are inherited by oral teaching the relatives. By the 21st century, the company had transformed into a business model. At present, there are 4 groups consisting of lions and dragons, Kratong Tang Seua, Klong Yao application and Portuguese dance. The collection of the show is as follows. 1) A group of lions and dragons consist of 19 company members which are : Sith Thevatham company, Sith Luang Po Toon company, Sith Look Chaimongkol company, Long Qian Thailand company, Look Thonburi company, Look Po Pie Bang Song Rit company, Look Po O Pa Sri company, Look Suan Yee Sip company, Sith Luang Po Mahesuan company, Sith Luang Po Vichiangmunee company, Sith Luang Po Keaw company, Sith Chao Po Jiao di Lar company, Sith Look Chaofahchuthamanee company, Kang Puk Thailand company, Sith Jakkapatdam company , Look Chao Po Kao Tok company, Sith Eak Taomahaprom company, Look Pranaresuan company, and Sith Luang Po Noi company. 2) Kratong Tang Seua 4 company which are: Sith wat yai Srisuphan company, Sith Po Tod company, Sith wat bangsakeanok company and Sith Luang Po Meng watbangsakeanai company. 3) Klong Yao application 1 company which is: Sor Pornpraphom company. 4) Portuguese dance 1 company which is Kudechin Community. The 21st century attribute connect to ethnics, culture, tradition, roles and duties as well as knowledge Society. Those Performance have been developed to current culture the culture identity of Thonburi Community passed to the Lion dance, Dragon Mouth Dance and Dragon Kao Mai (The Dragon has 9 performance who carry 9 stick) Kratong Tang Seua and Tiger Challenge perform, Klong Yao playing and do the Pyramid acrobats with 3 Drum. In the last 10 year that the protugase dance been develop from their knowledge and become culture identity of Thonburi Community.