The Virtual NAACL 2021 Conference took place with over 2500 attendees and featured more than 500 papers on recent advances in computational linguistics and natural language processing. Researchers presented various topics such as reformulating tasks with masked language models, relevant, irrelevant, and misleading documents in ranking, registered reports for slow science in NLP, word embeddings for eCommerce, dense retrieval and question answering over tables, decontextualized sentences, fill-in-the-blank paradigms, explainability and interpretability of question answering models, and the future of virtual conferences. The conference also highlighted the importance of preregistration in research, with a paper winning the Best Thematic Paper Award.