Izabela (Iza) Moszczeńska or Moszczeńska-Rzepecka (28 October 1864 – 20 March 1941) was a Polish feminist journalist, translator and suffragette.

She was mostly educated at home, only receiving two years of formal schooling, although she gained fluency in English, French and German in addition to Polish.

Her father died in 1890 and the family estate had to be sold off so Moszczeńska and her mother moved to Warsaw where they started a secret girl's boarding school.

Her husband died in 1902 and Moszczeńska translated books by William James and Ellen Key in addition to writing articles that appeared in numerous newspapers and literary magazines such as Życie.

[1] While living in Poznań, Moszczeńska began participating in the activities of local women's organizations, much to the displeasure of her husband's family.