Damisa Ongsiriwattana is the Founder of SOUR Bangkok, the first-ever independent agency in Thailand that focuses on the women’s market and promotes female creative leadership in the industry. With over a decade, she is behind culturally impactful work such as ‘Sabina Braless,’ a bold campaign that redefined humor and earned multiple international awards. Another major achievement is "Girl From Nowhere", a globally recognized series. It became the first Thai series to rank in Netflix’s Top 10 across 67 regions worldwide and has since been adapted into a Japanese version—marking a significant milestone for Thai content on the global stage.

Under her leadership, SOUR Bangkok has been named Campaign’s Southeast Asia Boutique Agency of the Year for seven consecutive years (2018–2024) and AdFest’s Agency of the Year.

Before founding SOUR, Damisa served as Creative Director at Ogilvy Thailand and J. Walter Thompson. Her work has been consistently recognized on both global and national stages, and she has been invited to serve on juries for leading award platforms including Cannes Lions, The One Show, ADC Awards, LIA and many others. Notably, she was a jury member for the Glass Awards at Spikes Asia, honoring work that advances gender equality.

Today, Damisa continues to work at building local brands as well as mentoring next generation talents, making them all shine on the global stage.