Analytical chemistry plays a fundamental role in forensic science by providing a wide range of scientific methods and advanced techniques for detecting unknown substances and analyzing physical evidence collected from crime scenes. Forensic laboratories rely on chemical analysis to identify the nature, composition, and chemical structure of different materials, contributing to accurate and reliable scientific results. The applications of analytical chemistry include the detection of drugs and poisons, analysis of bloodstains and biological fluids, examination of gunshot residues, and identification of chemical substances in fibers, paints, and glass. Modern techniques such as Fourier Transform Infrared Spectroscopy (FTIR), Ultraviolet-Visible Spectroscopy (UV-Vis), and Gas Chromatography-Mass Spectrometry (GC-MS) are widely used to identify chemical compounds and determine their concentrations. These techniques help compare different samples and identify similarities and differences between them. They also provide valuable information that supports forensic investigators and experts in interpreting evidence. Therefore, the integration of analytical chemistry with forensic science is essential for developing investigative methods, improving the reliability of laboratory results, and providing scientific evidence that can support judicial proceedings.