The purpose of this chapter is to begin a critical dialogue on localization quality and assessment of the quality of localized products. Building on the author’s previous work on localization quality management, this chapter examines tools and methods currently used in localization quality assessment. Problems inherent in current product-based approaches suggest that localization quality assessment should focus less on localized end products than on the customer’s requirements and expectations with regard to such end products. Identifying and documenting client needs, preferences, and expectations in a client quality requirements specification during the project planning phase and measuring compliance with such requirements offers a valid basis on which to empirically measure the quality of localized products.