法语鉴定文凭（法语：DELF - DALF）是两种授予母语非法语人士的法语能力证书，于1985年创立，由法国教育部所直接管辖的法国教学国际中心（CIEP）管理颁发。

其依据欧洲理事会之欧洲共同语言参考标准分为A1、A2、B1、B2、C1、C2六等，并划分为两种不同名称的证书：

文凭的考试根据听力、阅读、写作、口语表达为主的四种语言能力，评鉴受试者的法语能力。没有报考次数、等级衔接或报名地点、时间间隔、年龄的限制。两种文凭皆以法国官方承认的方式，对于非以法语为其母语之持有者给予法语知识和能力的证明与肯定，且该文凭终生有效，具有抵免法国学术机构法语考试的效力，至今已有150个国家共900多个中心固定举办该项测验。

The Diplôme approfondi de langue française (English: Diploma in Advanced French), or DALF for short, is a certification of French-language abilities for non-native speakers administered by France's Centre international d'études pédagogiques, or CIEP, (International Centre of Pedagogical Studies) for the country's Ministry of Education. It is composed of two independent diplomas corresponding to the top two levels, C1 & C2, of the Common European Framework of Reference for Languages. Level C2 is the highest level attainable according to this framework, denoting mastery and proficiency in the French language. The "basic" and "independent" divisions of language proficiency are certified by the DELF levels A1 to B2.