Teacher Ashling, from Tullamore, Co. Offaly was murdered on Wednesday.
The 23-year-old had gone for an afternoon run when her killer struck.
The vigil in Derry was staged by Alliance for Choice at 4pm on Friday and a large crowd attended.
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A section of the attendance at the vigil for Ashling Murphy held at the Guildhall Steps on Friday afternoon. Photo: George Sweeney. DER2202GS – 096
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A young girl attending the vigil for Ashling Murphy places a message on the Guildhall Steps on Friday afternoon. Photo: George Sweeney. DER2202GS – 082
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Martina Anderson and Karen Mullan were among the many women attending the vigil for Ashling Murphy who placed candles and flowers on the Guildhall Steps on Friday afternoon. Photo: George Sweeney. DER2202GS – 083
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Mel Bradley reads a poem during the vigil for Ashling Murphy held at the Guildhall Steps on Friday afternoon. Photo: George Sweeney. DER2202GS – 084