Morgan Stanislaus "Stan" Grace CMG (28 February 1837 – 19 April 1903) was a surgeon in Wellington, member of the Legislative Council of New Zealand, and a staunch Roman Catholic.

He was born on 28 February 1837 in Clonmel, County Tipperary, Ireland, to Ellen Mary Russell and her husband, James Grace, a landowner.

In 1858 he received a diploma in medicine at the University of Jena, Germany, and in 1859 he took his licentiate at the Royal College of Surgeons of Edinburgh.

He arrived in Auckland with a detachment of troops on the Nugget on 21 June 1860, three months after the start of the Waitara war in the Taranaki Region.

[1] Grace was a founding director of the New Zealand board of the Australian Mutual Provident Society from 17 February 1871 and was chairman from 1891 to 1893.