The two journalists have 20 days to appeal against their sentences, but if their cases are rejected by the Supreme Court the sentence will be carried out.
Iran has executed over 100 people so far in 2007, most of them by hanging.
A spokesman for the Iranian judiciary said that the two journalists had "taken arms to topple the system".
No further details were released about the reasons for their sentencing, but the two are members of the Kurdish minority.
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