The quakes with a magnitude of 4.6 and 4.3 struck about 75 kilometres south and 97 kilometres southwest of Sandspit on the Haida Gwaii islands.
The West Coast-Alaska Tsunami Warning Centre in Palmer, Alaska, says there is no tsunami danger from either quake.
Two other quakes of similar magnitudes occurred in February in the same region.
A 7.7 earthquake rocked Haida Gwaii in October, the strongest recorded in Canada since an 8.1 shaker hit the same area in 1949.
None of the recent tremors has caused any damage.