Mildred Mary Nevile MBE (1927 – 2012) was a lifelong Catholic activist against poverty and injustice.

She led what was then the Catholic Institute for International Relations to focus its work on alleviating poverty.

She was the fourth of the six children of Muriel Margaret (born O'Conor) and Charles Joseph Nevile (1883–1930).

It had been started in 1972 and saw its role as raising awareness of affairs in South Africa and to co-ordinate a response from churches of any denomination.

She is credited with advising Julian Filochowski to cut their advertising budget and to instead establish regional offices.