im not sure if there is one. its not something ive had to look for. my partner is diabetic(type 2) but yoghurt doesnt feature in his diet.
my aunt is also diabetic and she has natural yogurt and adds her own fruit.
I am type 2 and on metformin I have Mullercorner youghutrs and have had no problems ask your nurse she will tell you you do NOT need to buy diabetic sweets or foods and a little amount of sugar is ok
I presume you mean flavoured yoghurts, which usually have added sugar. Most supermarkets stock Fage's "Total" brand natural Greek yoghurt, which is fine for diabetics, and comes in 0% and 2% fat forms as well as full fat (10%). If you don't like the taste of natural yoghurt you could always flavour it with fruit (fresh or tinned in natural juice) or a sugar-free preserve.
Use natural yoghurt and add fruit. I do this every day. Some fruits may need some artificial sweetner but most are OK without. Much better and MUCH cheaper than buying fruit yoghurts. Try Aldi natural yoghurt, only 29p for a large pot.
I was diagnosed with type 1 diabetes earlier this year and found it a struggle to find low fat low sugar yoghurt's myself. The best ones I found are the weight watchers brand which is available in almost all supermarkets. They contain on average 7.4g sugar per 100g which is within the guide lines given to me by my dietitian.