Cathy O'Brien or Kathy O'Brien is the name of
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Cathy O'Brien (conspiracy theorist)
Cathy O'Brien (born December 4, 1957) is an American conspiracy theorist and author who claims to have been a victim of a government mind control program called "Project Monarch", which she alleges was part of the CIA's Project MKUltra. O'Brien ...
(born 1957), American conspiracy theorist
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Cathy O'Brien (runner) (born 1967), American marathon runner
See also
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Kate O'Brien (disambiguation) Kate O'Brien may refer to:
* Kate O'Brien (novelist) (1897–1974), Irish novelist and playwright
* Kate O'Brien (cyclist) (born 1988), Canadian track cyclist and bobsledder
* Kate Cruise O'Brien (1948–1998), Irish writer
* Kate O'Brien (The Drew ...
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Catherine O'Brien (disambiguation) Catherine (or variants) O'Brien may refer to:
* Catherine Amelia O'Brien (1881–1963), Irish stained glass artist
* Catherine O'Brien (film scholar), British film scholar
* Catherine O'Brien (Neighbours)
* Katherine O'Brien, physician and scientis ...
{{Hndis, Obrien, Cathy