Dieter Stappert (October 13, 1942 - October 17, 2008) was an Austrian journalist and team manager in motorsport.
From 1977 to 1985 he worked at the BMW Motorsport and one of his first programme was the touring car BMW Junior Team which promoted Eddie Cheever, Manfred Winkelhock and Marc Surer through the ranks.
He created a highly competitive team signing former Anton Mang's mechanic Franz-Josef "Sepp" Schlögl as technical director and starting a long-term relationship with Honda Racing Corporation to receive factory-spec NSR250s. Over the years the HB team won many races with riders like Reinhold Roth, Helmut Bradl and Ralf Waldmann but never achieved the world title, finishing as runner-up four times (1987, 1989, 1991 and 1996).
After the withdrawal of HB from motorcycle road racing, Stappert established his own racing team in 1997 with Marlboro sponsorship and a factory Honda NSR250 for Ralf Waldmann who finished again second in championship. In 1998 the team received Castrol sponsorship and entered a NSR250 for Stefano Perugini with poor results.
In 2006 Stappert managed the KTM Junior Team in the 125cc class with Stefan Bradl as rider.
Dieter Stappert died in hospital in Munich on October 17, 2008 having never recovered full consciousness since a heart attack in June.
- Miller, David (18 October 2008). "Dieter Stappert has died". bikesportnews.com. www.bikesportnews.com Ltd. Retrieved 29 March 2014.
- Moody, Toby (18 October 2008). "Dieter Stappert, 1942-2008". autosport.com. Haymarket Media Group Limited. Retrieved 29 March 2014.
- "Dieter Stappert, 1942-2008". grandprix.com. Inside F1, Inc. 18 October 2008. Retrieved 29 March 2014.