In 2023, the Pure and Applied Chemistry International Conference, known as PACCON will be held at Mae Fah Luang University, Chiang Rai, Thailand during January 20 – 21. The theme for PACCON 2023 is “Chemical Diversity towards Sustainable Development Goals”. It is undeniable that chemistry has a critical role in achieving sustainable development. Advanced research involves the theme will be displayed at the conference. The PACCON is the annual meeting for Thai chemists to present and share their research. Besides, there will be plenary lectures given by world-renowned chemists, presentations by the Chemical Society of Thailand’s awardees, and invited talks by top chemists. In 2023, we have the honor to have the plenary lecture given by a Nobel laureate.