This document discusses strategies for building national species checklists and inventories. It explains that national checklists are important tools for conservation planning and are required under the Convention on Biological Diversity. It explores terminology like checklists, catalogs, and inventories. It also discusses assessing available taxonomic knowledge, searching existing data from the Global Biodiversity Information Facility, and mining data from literature to build initial working species lists. The document aims to facilitate expert-driven processes for building national checklists and identify countries' requirements, evaluation methods, workflow designs, and resource needs.