The IEEE GreenTech, Sustainability, and Net Zero Policies & Practices Symposium (IEEE GTSNZ) 2023 is designated for reporting recent advancements, practices, challenges, and opportunities in the areas of green technology, sustainability, and net zero emissions. The IEEE-GTSNZ Symposium fosters collaborative efforts and knowledge sharing between government, industry, academia, and the community. The Symposium provides insights into best practices and experiences to address the challenges and collective efforts towards a sustainable and net-zero future.