资深大律师（英语：Senior Counsel）是一些英联邦国家及前英联邦国家和香港对经确认后的资深讼务律师称号。该称号一般是这些司法辖区取消过去使用的“御用大律师”头衔后启用的代替头衔，因此实际待遇与之前的御用大律师类似。新加坡将同一英语头衔在汉语中称为高级律师。

香港在1997年主权移交予中华人民共和国后启用“资深大律师”头衔，除香港外，爱尔兰、南非、圭亚那、特立尼达和多巴哥、印度以及澳大利亚的大多数州都使用了“资深大律师”的称号。澳大利亚的联邦司法辖区及两个州、加拿大的联邦司法辖区以及新西兰也曾使用“资深大律师”，但在近年恢复了“御用大律师”。其他国家使用的类似称号包括斯里兰卡的总统专用大律师。这些国家和地区一般都在脱离英国主权或取消君主制的时候取消了带有王权色彩的“御用大律师”头衔。澳大利亚、加拿大和新西兰则是由于共和派势力抬头而决定取消“御用大律师”头衔的，但近年来由于对君主制的支持回涨，因此又恢复使用“御用大律师”头衔。英国本身也曾暂停册封“御用大律师”，但后来决定在改革选拔机制后恢复使用“御用大律师”头衔。

The title of Senior Counsel or State Counsel (post-nominal letters: SC) is given to a senior lawyer in some countries that were formerly part of the British Empire. "Senior Counsel" is used in current or former Commonwealth countries or jurisdictions that have chosen to change the title "Queen's Counsel" to a name without monarchical connotations, sometimes (but not always) because the British monarch is no longer head of state, such that reference to the Queen is no longer appropriate. Examples of jurisdictions which have made the change because of the latter reason include Zambia, India, Hong Kong, the Republic of Ireland, South Africa, Kenya, Malawi, Singapore, Guyana and The Republic of Trinidad and Tobago. Just as a junior counsel is "called to the [Outer] Bar", a Senior Counsel is, in some jurisdictions, said to be "called to the Inner Bar". Senior Counsel may informally style themselves as silks, like their British counterparts. This is the case in Ireland, Australia, Hong Kong, and South Africa.