Martine Janssen

{{short description|Dutch swimmer}}

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| name = Martine Janssen

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| full_name = Martine Stephanie Janssen

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| birth_date = {{Birth date and age|df=yes|1977|6|16}}

| birth_place = Dieren, Gelderland, Netherlands

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Martine Stephanie Janssen (born 16 June 1977 in Dieren, Gelderland) is a former breaststroke swimmer from the Netherlands, who competed for her native country at the 1992 Summer Olympics in Barcelona, Spain. There she was eliminated in the heats of the 100m and 200m Breaststroke.