This book serves as a practical guide for delving into the world of knowledge graphs. It presents projects across diverse industries like enterprise information, healthcare, banking, personal relationships, entity linking, scientific literature, social media analysis, legal search, judicial documents, government communications, and news recommendations. Readers will receive a comprehensive introduction to constructing and applying knowledge graphs, touching upon various technologies related to knowledge representation, acquisition, storage, and application. Highlighting implementation methods involving deep learning, natural language processing, alongside visualization applications, this text caters to students in computer science, software engineering, artificial intelligence, and related disciplines. Moreover, it’s a valuable resource for professionals and researchers utilizing knowledge graph technologies.