| Office: | Minister of Transport |
| Primeminister: | Otto Grotewohl |
| Predecessor: | Office established |
| Successor: | Roman Chwalek |
| Term Start: | 11 October 1949 |
| Term End: | 30 April 1953 |
| Birth Date: | 30 April 1888 |
| Birth Place: | Elberfeld, German Empire |
| Death Place: | Dresden, East Germany |
| Party: | Independent |
| Alma Mater: | Technical University of Hanover |
| Nationality: | German |
Hans Reingruber (1888–1964) was a German academic and the first minister of transport or traffic of East Germany.
Reingruber was born in Elberfeld (today Wuppertal) on 30 April 1888.[1] In April 1908 he enrolled at Technical University of Hanover and graduated from the university in 1912 receiving a degree in civil engineering and technical sciences.[1] In 1924 he obtained a PhD.[1]
Reingruber started his career at the Prussian Ministry for Public Works which was renamed as the Reich Ministry of Transport in 1919.[1] He served there until 1933. Following the Nazi rule he refused to become a member of the Nazi Party and left the ministry. He joined the Technical University of Dresden (TU Dresden) where he was a professor of railway and traffic engineering from 1934 to 1945. He served as its Prorector between 1946 and 1948.[1] On 11 October 1949 Reingruber was appointed minister of traffic to the cabinet led by Minister President Otto Grotewohl.[2] Reingruber was one of the cabinet members who were not a member of the ruling Party Socialist Unity Party.[2] [3] He also served as the dean of the faculty of civil engineering from 1950 to 1952.[1] His ministerial tenure ended on 30 April 1953, and he was succeeded by Roman Chwalek in the post.[4] Following the end of his ministerial tenure Reingruber returned to the TU Dresden and served as the department chair.
On 1 September 1957 Reingruber retired from the university.[1] He died in Dresden on 14 January 1964.[5]