Sylwia Ejdys-Tomaszewska (born 15 July 1984 in Bogatynia) is a Polish middle distance runner who specialises in the 1500 metres.
Ejdys had a share in the women's U23 team silver medal at the 2006 European Cross Country Championships alongside Katarzyna Kowalska.
[1] She represented Poland at the 2008 Beijing Olympics, but did not make it past the first round of the 1500 m. She moved up to the 3000 metres for the 2009 European Team Championships and came runner-up to Gulnara Samitova-Galkina.
Ejdys narrowly missed a medal at the 2010 IAAF World Indoor Championships, coming in fourth place behind defending champion Gelete Burka.
She reached the 1500 m final at the 2010 European Athletics Championships but performed poorly and finished dead last.