The women's 100 metres at the 2012 European Athletics Championships were held at the Helsinki Olympic Stadium on 27 and 28 June.
First 3 in each heat (Q) and 4 best performers (q) advance to the Semifinals.
Wind:
Heat 1: −0.3 m/s, Heat 2: +1.7 m/s, Heat 3: −0.3 m/s, Heat 4: +1.0 m/s
First 3 in each heat (Q) and 2 best performers (q) advance to the Final.
Wind:
Heat 1: 0.0 m/s, Heat 2: +2.0 m/s
Wind: −0.7 m/s