Question: Is condensed milk the same as sweetened condensed milk? 

I have a fudge recipe that calls for condensed milk and I can not find strictly condensed milk, only sweetened condensed milk or evaporated milk.

Answer: 
Technically no, it is not the same thing. Sweetened condensed milk has a very high sugar content, something like 40%, while just condensed milk has no sugar at all. 

But this still doesn't tell us what the recipe author meant. The availability of different types of condensed and evaporated milks seem to differ a lot in different parts of the world. This being a fudge recipe, I can imagine that it is an American one, because fudge is not as common in other places. If unsweetened condensed milk is unusual in the States, I can also imagine that the recipe author was not aware of the difference and just shortened it to "condensed milk" without knowing that it has a difference in meaning. 

Your best strategy is finding a different recipe, which uses a different dairy product. Not only will be there no doubt what the author meant, it will also be much easier for you to make it as it is, instead of having to mess around with substitutes. Candy recipes are generally sensitive when it comes to small differences in ingredients. 

If you hang to your recipe very much, you can try looking online for non-sweetened condensed milk, it is possible that you will find products your brick and mortar stores don't carry.
As a recipe developer / chef... 'Sweetened Condensed Milk' and 'Condensed Milk' are exactly the same product - just labeled differently by different manufacturers for different markets. Condensed milk is ALWAYS sweetened.

Here's the lowdown:

Evaporated Milk, is just that. Milk that has been evaporated with 60% of the water removed. This product has NO sugar added.

'Sweetened Condensed Milk' and 'Condensed Milk' take this evaporation process a step further and add up to 40% sugar by volume. 

So to sum up:

* 'Sweetened Condensed Milk' and 'Condensed Milk' are exactly the same product.
* 'Sweetened Condensed Milk' and 'Condensed Milk' are both up to 40% sugar by volume.
* Evaporated milk contains no added sugar.

Really hard to believe that the other answers here are so wrong...