| Office: | Vice-Chancellor of Austria |
| Chancellor: | Rudolf Ramek |
| Termstart: | 20 November 1924 |
| Termend: | 20 October 1926 |
| Predecessor: | Felix Frank |
| Successor: | Franz Dinghofer |
| Office2: | Third President of the National Council |
| Successor2: | Sepp Straffner |
| Predecessor2: | Franz Dinghofer |
| Termstart2: | 27 October 1926 |
| Termend2: | 4 December 1930 |
| President2: | Wilhelm Miklas Alfred Gürtler |
| Birth Date: | 17 March 1875 |
| Birth Place: | Uničov, Moravia, Austria-Hungary |
| Death Place: | Vienna, Austria |
| Party: | Greater German People's Party |
Leopold Waber (17 March 1875 – 12 March 1945) was an Austrian lawyer and politician.
He served as Vice-Chancellor of Austria and Minister for Judicial Affairs from 1924 to 1926 under Chancellor Rudolf Ramek. He previously served as Minister of the Interior from 1921 to 1922 and Minister of Justice from 1922 to 1923. He also served as Third President of the National Council from 1926 to 1930.[1] [2]