This chapter provides a concise introduction to the Rust programming language, tailored specifically for readers interested in applying Rust to deep learning and AI development. Rather than offering a complete tutorial, the chapter focuses on the essential syntax and concepts—such as ownership, borrowing, lifetimes, and memory safety—that differentiate Rust from other languages like Python and C++. It also touches on error handling, pattern matching, and basic data structures. While experienced Rust developers may choose to skip this chapter, it serves as a self-contained primer for readers coming from other programming backgrounds, particularly those familiar with Python or JavaScript. By the end, readers will have the foundational knowledge needed to understand and write idiomatic Rust code in subsequent deep learning chapters.