Dear colleagues, It is our pleasure to invite you to join the 2nd International Electronic Conference on Chemical Sensors and Analytical Chemistry (CSAC2023), which will be hosted online, from 16 to 30 September 2023, at CSAC2023.sciforum.net. Chemical sensors are widely used as early warning systems due to their low cost, high accuracy, immunity to harsh environmental conditions, and other advantages, playing an ongoing and critical role in our society. The scope of this online conference is to gather well-known experts from around the world who are currently working in chemical sensor technologies and analytical chemistry, and to provide an online forum for presenting and discussing new results.