**Abstract**

The importance of pharmaceuticals comes from their direct connection to human life. Therefore, many analysis techniques such as chromatography, spectroscopic methods, and others have been developed for one goal, which is to ensure that the drug reaches humans with high quality. Spectrophotometric and titrimetric methods have been in general use for the last 40 years and over this period have become the most important analytical instrument in the modern-day laboratory. In many applications, other techniques could be employed in pharmaceutical analysis, but none rival UV–visible spectrometry as well as titrimetry, for their simplicity, versatility, speed, accuracy, and cost-effectiveness. This chapter highlights the spectroscopic methods in the ultraviolet and visible regions, as well as the titration methods that are still widely used in the field of pharmaceutical analysis. The types of titrations, as well as the most important reactions used in spectrophotometric methods, are presented. Examples of the most important applications in the field of pharmaceutical analysis are also presented.

**Keywords:** analysis, spectrophotometric, titrimetric, pharmaceutical, electromagnetic radiation
