According to studies, the answer has to be yes.
"The following dog breeds appear to have an increased risk of developing diabetes:
"Pedigree analysis has, however, identified a genetic predisposition in Keeshonds and Samoyeds."
If you have a Samoyed you suspect may have diabetes, I'd urge you to visit your vet as soon as possible for two reasons. There are quite a few other medical problems that may look like diabetes but turn out not to be; it's best to learn what the problem really is and how to go about treating it as soon as possible. Also, if it turns out that it is diabetes, getting started with treatment means less diabetic complications in the long run.
The Canine Diabetes Wiki link is above-you might want to stop by and do some reading