Rainer von Fieandt's cabinet was the 42nd government of Republic of Finland. Cabinet's time period was from November 29, 1957 to April 26, 1958. It was a caretaker government. Cabinet fell by interpellation of the opposition and it is up to date (2021) the last Finnish government to do so.
| November 29, 1957–April 26, 1958 | Independent | ||
| Minister of Foreign Affairs Paavo Hynninen | November 29, 1957–April 26, 1958 | Independent | |
| Minister of Justice Kurt Kaira | November 29, 1957–April 26, 1958 | Independent | |
| November 29, 1957–April 26, 1958 | Independent | ||
| Minister of the Interior Urho Kiukas | November 29, 1957–April 26, 1958 | Independent | |
| Minister of Finance Lauri Hietanen | November 29, 1957–April 26, 1958 | Independent | |
| Minister of Education Reino Oittinen | November 29, 1957–April 26, 1958 | Independent | |
| Minister of Agriculture Hans Perttula | November 29, 1957–April 26, 1958 | Independent | |
| Minister of Transport and Public Works Aku Sumu Paavo Kastari | November 29,1957 –February 28,1958 February 28,1958 – April 26,1958 | Independent Independent | |
| Deputy Minister of Transport and Public Works Paavo Kastari Erkki Lindfors | November 29,1957 –February 28,1958 February 28,1958 – April 26,1958 | Independent Independent | |
| November 29, 1957–April 26, 1958 | Independent | ||
| Minister of Social Affairs Heikki Waris | November 29, 1957–April 26, 1958 | Independent | |
| Deputy Minister of Social Affairs Erkki Lindfors | November 29, 1957–April 26, 1958 | Independent |