We all know about the plight of the euro. Lost amid the world's concerns, however, is the fact that a number of European companies stand to benefit substantially from a weaker currency.

We've already seen how that works this earnings season with last week's preliminary sales report by Germany's Adidas. Thanks to the fact that the company operates in Europe but has significant sales outside of Europe, group revenues were up an incredible 19% in the second quarter in euro terms. That was far ahead of expectations and prompted the stock to rise more than 7%.

So what other European companies might see a similar catalyst in their next earnings report? Take a look:

Company

% Sales Outside Europe

Next Reports on ...

Siemens (NYSE: SI)

38%

July 29

Unilever (NYSE: UL)

68%

Aug. 5

Natuzzi (NYSE: NTZ)

48%

Sept. 22

Sources: Capital IQ and Thomson StreetEvents.

All three of these companies operate outside of Europe and have significant assets in the region, yet they also derive a significant amount of sales from places whose currencies are strengthening against the euro. As a result, we might expect an upside surprise in their next earnings report. Even if you don't consider yourself a "trader," that may be a catalyst you should consider -- particularly if you believe as we do at Motley Fool Global Gains that the euro is likely to get weaker over the long term.