The Magnus Baronetcy, of Tangley Hill in Wonersh in the County of Surrey, is a title in the Baronetage of the United Kingdom.

It was created on 22 June 1917 for the educationalist and Conservative politician Philip Magnus.

In 1951 he assumed by deed poll the additional surname of Allcroft.

He died childless and was succeeded by his nephew, the third Baronet and (as of 2022) present holder of the title.

The heir apparent is the present holder’s eldest son Thomas Henry Philip Magnus (b.