Quantum benchmarking is a methodological approach and research field focused on the systematic evaluation and comparison of the performance, reliability, and capabilities of quantum computing hardware, software, and algorithms. It investigates properties such as fidelity, coherence times, gate errors, connectivity, and the successful execution of specific quantum circuits or algorithms, employing standardized protocols, metrics, and test suites designed to provide quantitative assessments across diverse quantum platforms. This field is significant for tracking progress in quantum technology development, identifying system-specific strengths and weaknesses, guiding engineering improvements, and enabling informed comparisons and selection of quantum resources for various applications.