Skip to content
Name Lineage

    The surname O'Shaughnessy

    An Irish surname, carried by 3,246 people in the United States.

    4 syllables Soundex O225

    O'Shaughnessy: #9,940 of 162,253 surnames in the 2010 US Census #1Smith#160,975Doriott#10Martinez#100Jimenez#1,000Archer O'Shaughnessy #9,940, 3,246 people O'Shaughnessy: #9,940 of 162,253 surnames in the 2010 US Census #1Smith#160,975Doriott#100Jimenez O'Shaughnessy #9,940, 3,246 people
    Every surname held by 100 or more people in the 2010 US Census, most common on the left (162,253 in all). O'Shaughnessy is more common than 93.9% of them.

    Origin

    Irish origin

    From Irish Ó Seachnasaigh.

    One of 880 Irish surnames on this site.

    Origin from Wiktionary (CC BY-SA 4.0).

    How common it is

    2010 US Census

    There were 3,246 people named O'Shaughnessy in the United States in 2010, about 1 in every 95,116 Americans. That is up 6.6% since 2000, when the Census counted 3,045.

    #9,940
    rank among US surnames
    3,246
    people in 2010
    1.1
    per 100,000 Americans
    +6.6%
    change since 2000 (was #9,806)
    RankSurnamePeople1 in
    #9,931Tso3,24995,028
    #9,932Olney3,24895,057
    #9,940McCarroll3,24695,116
    #9,949Schantz3,24595,145

    Who is named O'Shaughnessy

    Race and Hispanic origin as people reported it in the 2010 Census

    95% of people named O'Shaughnessy identified as white (not Hispanic), 2.4% as Hispanic or Latino (any race) and 1.2% as two or more races.

    • White (not Hispanic) 95%
    • Hispanic or Latino (any race) 2.4%
    • Two or more races 1.2%
    • Black (not Hispanic) 0.5%
    The Census suppresses very small shares to protect privacy; Asian & Pacific Islander, Native American are not shown.

    Compare: most common surnames among white Americans.

    Famous O'Shaughnessys

    3 notable people on Wikidata, most written-about first

    • Tam O'Shaughnessy
      American educator, children's science writer, professional tennis player, born 1952
    • Terrence J. O'Shaughnessy
      American Air Force general, born 1964
    • Colleen O'Shaughnessey
      American voice actress, born 1971

    Other Irish surnames

    All 880 Irish surnames

    Questions

    Where does the surname O'Shaughnessy come from?
    From Irish Ó Seachnasaigh.
    How common is the surname O'Shaughnessy?
    3,246 people in the United States had the surname O'Shaughnessy in the 2010 Census, about 1 in every 95,116 Americans. It ranked 9,940th of 162,253 surnames.
    What ethnicity is the surname O'Shaughnessy?
    In the 2010 Census, 95% of people named O'Shaughnessy identified as white (not Hispanic), and 2.4% as Hispanic or Latino (any race).
    Who is the most famous person named O'Shaughnessy?
    Tam O'Shaughnessy, American educator, children's science writer, professional tennis player, followed by Terrence J. O'Shaughnessy.
    Where is the surname O'Shaughnessy most common?
    Wikidata records people named O'Shaughnessy in the United States.
    Is the surname O'Shaughnessy getting more or less common?
    More common. 3,045 people carried it in the 2000 Census and 3,246 in 2010, up 6.6%.