This study focused on the characterization and dissolution behaviors of fly ash produced by the Çatalağzı power plant (Zonguldak, Turkey) in which bituminous coal is burned. The fly ash, containing mainly a glassy phase and small crystalline phases, is a typical class F fly ash with pozzolanic properties. Therefore, it can be used in many different areas. For this material to be used safely, it is necessary to determine its dissolution behavior as well as its physical, chemical, mineralogical, and morphological properties. The dissolution behavior of the Çatalağzı power plant fly ash (CFA) was examined by two standard methods, namely TCLP 1311 and ASTM 3987 for some selected elements. Furthermore, the mineralogical and morphological changes in the CFA residues from dissolution processes were investigated using the XRD and SEM-EDS methods. The results obtained from characterization and dissolution tests showed that CFA can be considered as inert waste according to the EU waste acceptance criteria (EUWAC) limits and can be utilized as a raw material in many different sectors.