| João de Vallera | |
| Office: | Portuguese Ambassador to the United Kingdom |
| Term Start: | 19 January 2011 |
| Term End: | 1 August 2016 |
| Predecessor: | António Santana Carlos |
| Successor: | Manuel Lobo Antunes |
| Birth Date: | 1 June 1950 |
| Birth Place: | Malange, Angola |
| Alma Mater: | University of Lisbon |
João de Vallera (born 1 June 1950) is a Portuguese diplomat. Born in Angola, de Vallera spent 15 years in Brussels working for the European Union before becoming a diplomat. He has served as Portugal's ambassador to Spain, Ireland (1998–2001), Germany (2002–07), the United States (2007–2010),[1] and the United Kingdom (2011–2016).
He was a recipient of the Grand Cross of the Order of Merit (Portugal) on 23 July 1998.[2]