Irina Grazhdanova (Russian: Ирина Гражданова, born 25 July 1987) is a paralympic swimmer from Russia competing mainly in category S9 events.

In both games she won a silver in the 50m freestyle behind South Africa's Natalie du Toit.

In 2004, she also competed in the 100m butterfly where she finished last in her heat, 200m individual medley finishing in fifth in her heat but not advancing to the final, 100m freestyle finishing seventh in the final and was part of the Russian team that missed out on bronze in the 4 × 100 m medley by 0.12 seconds.

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