Chief Frederick Rotimi Alade Williams, QC, SAN (16 December 1920 – 26 March 2005) was a prominent Nigerian lawyer who was the first Nigerian to become a Senior Advocate of Nigeria. In the 1950s, he was a member of the Action Group and subsequently became the minister for local government and justice. He was the president of the Nigerian Bar Association in 1959, the association is the leading body for lawyers in the country. He left politics in the 1960s, as a result of the political crisis in the Western Region of Nigeria.

Throughout his career, he was involved in some memorable and important court cases, such as Lakanmi vs the Western Government of Nigeria, which set the precedent that a military government could not use its power to make laws that will appropriate an individual's property. The Oloye Williams, himself a Yoruba chieftain, was also among a group of lawyers that represented the Oba of Lagos, Adeniji Adele, against challenges by the Nigerian National Democratic Party. The latter had previously gained solidarity and foundation from the ruling House of Docemo in Lagos.