This study investigates the efficiency of ultrasound-assisted dispersive liquid–liquid microextraction (UA-DLLME) for extracting malachite green (MG) and rhodamine B (RB) dyes from water samples. Under optimal conditions, the linear dynamic range (LDR), limit of detection (LOD), and limit of quantification (LOQ) were determined for both dyes. Extraction efficiency was high (95.53–99.60%), with relative standard deviations (RSD) below 3.5%. The method successfully determined RB and MG in various water samples.