There have been three baronetcies created for people with the surname Cayzer, each in the Baronetage of the United Kingdom and each for members of the same family .
The Cayzer Baronetcy, of Roffey Park in the County of Sussex, was created on 17 January 1921 for August Bernard Tellefsen Cayzer, the third son of Sir Charles Cayzer, 1st Baronet, of Gartmore. His son, the second Baronet, was created a life peer as Baron Cayzer, of St Mary Axe in the City of London. However, on his death in 1999 both titles became extinct.
The Cayzer Baronetcy, of Tylney in the County of Southampton, was created on 29 January 1924 for the businessman and ConservativeMember of Parliament Herbert Robin Cayzer, the fifth son of Sir Charles Cayzer, 1st Baronet, of Gartmore. In 1939, he was raised to the peerage as Baron Rotherwick, of Tylney in the County of Southampton. His grandson, the 3rd Baron and 3rd Baronet of Tylney, succeeded additionally (as 6th Baronet) to the Cayzer Baronetcy of Gartmore on 27 February 2012.