List of fraternities and sororities at Cornell University

Irving Society – 1868-1869, evolved into ΦΚΨ

ΑΣΧ – Alpha Sigma Chi, 1871-1879, absorbed into ΒΘΠ ^[53]

ΕΚΠ – Epsilon Kappa Pi (local), 188x–1888, became ΦΓΔ ^[44][40]

Skull – 1901-1918, became ΦΔΣ ^[44]

Bandhu – 1902–1918, became ΦΔΣ ^{[54][55][40]: 10th ed, 687}

ΘΛΦ – Theta Lambda Phi, 1903-1912, became ΣΦΕ ^[44]

Zodiac – 1904–1936, absorbed into ΑΤΩ after a failed absorption by Beta Kappa ^[56]

Cerberus – 1904-1911, became ΦΚΣ ^[44]

Cayuga Club – 1905-1910, became ΣΦΣ (see ΤΚΕ) ^{[57][54][40]: VIII-23 [44][58]}

ΩΠΑ – Omega Pi Alpha, 1905-1907, see Nayati (local) ^{[40]: 7th ed}

ΚΨ – Kappa Psi, 1907-1923, local, became ΤΚΕ ^{[40]: 7th ed [57]}

Nayati – 1907-1919, local, became ΔΣΦ ^{[59][60][40]: VIII-12}

Obelisk – 1907-1910, local, see ΑΧΡ ^[44]

ΦΔΣ Phi Delta Sigma, 1908–1930, became ΦΚΤ ^[54][55][61]

ISWZA – 1908–1913, local, became ΛΧΑ ^[62][44][63]

Arts and Science Club – 1908-1922, became ΑΦΔ ^[44]

Amphia – 1909-1912, became ΘΧ ^[44]

ΒΣ – Beta Sigma (local), 1910–1911, Jewish, became ΠΛΦ ^[44][41]

Βס – Beta Samach, 1910–1920, Jewish, became ΒΣΡ ^[64][65][41]

ΣΦΣ – Sigma Phi Sigma, 1910-1941, see ΤΚΕ ^{[57][54][40]: VIII-23 [58]}

ΦΕΠ – Phi Epsilon Pi, 1911–1970, became ΖΒΤ ^[66][41]

Cadeucus – 1911-1914, local, became ΑΓΡ ^[44]

Eleusis, 1912-1931, local, became ΘΚΝ, (see ΛΧΑ).

ΑΘ – Alpha Theta, 1912-1917, local, became ΠΚΑ ^[67]

ΟΑΤ – Omicron Alpha Tau, 1912–1934, Jewish, merged with ΤΔΦ ^[68][66][41]

ΦΣΔ – Phi Sigma Delta, 1912-1970, became ΖΒΤ ^{[57][39][40]: VIII-13 [41]}

ΦΒΔ – Phi Beta Delta, 1912-1918, 1934-1941, Jewish, see ΠΛΦ ^{[69][40]: III-106 [66]: NY state appendix section [41]}

ΩΔ – Omega Delta, 1913-1917, local, became ΣΠ ^[70]

ΟΣΟ – Omicron Sigma Omicron, 1914-1915, local, became ΘΑ, (see ΔΣΛ) ^[71]

ΘΑ – Theta Alpha, 1915-1933, see ΔΣΛ ^{[71][40]: VIII-25}

ΦΤ – Phi Tau, 1915-1916 (local), Jewish, became ΑΕΠ ^[72][73]

Komos Club – 1916-1921, became ΠΚΦ ^[44]

ΒΣΡ – Beta Sigma Rho, 1920–1972, Jewish, merged with ΠΛΦ ^{[64][65][74][40]: VIII-25 [41]}

Scorpion Club – 1923-1940, became ΤΚΕ ^[57]

ΦΔΜ – Phi Delta Mu, 1925-1934, Jewish, see ΦΒΔ ^[57][41][75]

ΒΨ – Beta Psi, 1926-1935, dormant, see ΒΚ ^[76]

ΣΩΨ – Sigma Omega Psi, ~1927-1934?, Jewish, see ΑΕΠ ^{[40]: VIII-22 [77]}

ΘΚΦ – Theta Kappa Phi, 1927-1931, became ΦΚΘ ^{[78][40]: VIII-25}

ΘΚΝ – Theta Kappa Nu, 1931–1939 (NIC), merged into ΛΧΑ ^[79][40]

ΒΚ – Beta Kappa, 1934-1936 (NIC), see ΘΧ ^{[40]: VIII-5 [80]}

Cornell Engineering Men – pre-1942, local, became Triangle ^[44]

ΚΝ – Kappa Nu, 1951-1963, Jewish, see ΦΣΕ ^[81][41]

ΦΑ – Phi Alpha, 1953-1959, Jewish, merged into ΦΣΔ (see ΖΒΤ) ^{[39][40]: VIII-13 [41]}

ΦΣΕ – Phi Sigma Epsilon, 1963-1985 (NIC), see ΦΣΚ and ΘΧ. ^[82]

ΦΔΑ – Phi Delta Alpha, 1970-1973, see ΦΔΘ ^[83]

Dormant chapters

ΚΑ – Kappa Alpha Society, 1868-1990, 2007-2018 (NIC), dormant ^[84]

ΑΩ – Alpha Omega, 1868-1870, local, dormant ^{[85][40]: 6th ed}

ΦΚΨ – Phi Kappa Psi, 1869-1877, 1885-2020 (NIC), dormant ^{[86][9][87][88]}

ΣΔΠ – Sigma Delta Pi, 1871-1874, dormant ^{[89][40]: 8th ed}

ΨΥ – Psi Upsilon, 1876-2016 (NIC), dormant ^[90][91][92]

ΘΝΕ – Theta Nu Epsilon, 1877-1913, dormant ^[93]

ΔΒΦ – Delta Beta Phi, 1878-1882, dormant ^{[40]: 8th ed [94]}

ΑΤΩ – Alpha Tau Omega, 1887-2013 (NIC), dormant ^[9][95]

Q.T.V. – 1888-1889, dormant ^{[40]: 7th ed [96]}

ΦΓΔ – Phi Gamma Delta (FIJI), 1888-1989, 1993-2020 (NIC), dormant ^[97][98]

ΠΛΦ – Pi Lambda Phi, 1896-1901, 1911-1976 (NIC), dormant ^[99][65][41]

ΘΞ – Theta Xi, 1903-1970, 2008-2010, (NIC), dormant ^[100][101]

ΔΣΦ – Delta Sigma Phi, 1907-1943 (NIC), dormant ^{[102][40]: III-43–46}

ΑΧΡ – Alpha Chi Rho, 1908-1971, 1976-1980, 1992-199x (NIC), dormant ^[103][40]

ΣΑΜ – Sigma Alpha Mu, 1911-1912, 1915-1973, 1985-2021 (NIC), dormant ^{[104][41][105]}

Huntington Club – 1911-1922+, local, Episcopal affinity, dormant ^[44][106]

ΦΚΣ – Phi Kappa Sigma, 1911-1991 (NIC), dormant ^[40]

ΘΧ – Theta Chi, 1912-1983, 1985-1999 (NIC), dormant ^{[107][82][80]}

ΣΦΕ – Sigma Phi Epsilon, 1912-2005, 2006-2019 (NIC), dormant ^[108][109]

ΤΕΦ – Tau Epsilon Phi, 1913-1932, 1939-2012 (NIC), dormant ^[110][41]

Philos Club – 1914-1917, local, dormant ^[44]

ΣΥ – Sigma Upsilon, 1915-1933, local, dormant ^[111]

ΦΔΠ – Phi Delta Pi, 1916-1926, Jewish, dormant ^[112][44]

ΑΦΔ – Alpha Phi Delta, 1922-1968, 2012-2018 (NIC), dormant ^[113]

ΤΚΕ – Tau Kappa Epsilon, 1923-1934, 1940-2012, 2018-2020, dormant ^{[114][57][115]}

ΦΚΘ – Phi Kappa Theta, 1927-1931 (NIC), dormant ^{[116][40]: VIII-25}

ΔΣΛ – Delta Sigma Lambda, 1933-1936 (DeMolay affiliated), dormant ^{[117][40]: VIII-8}

ΤΔΦ – Tau Delta Phi, 1934-1971 (NIC), Jewish, dormant ^{[40]: VIII-24 [118][41]}

Triangle, 1942-1985 (NIC), dormant ^[40]

ΑΓΣ – Alpha Gamma Sigma, 1972-199x (NIC), dormant, agricultural focus ^[40]

ΣΧΔ – Sigma Chi Delta, 1981-2020 co-ed local, dormant ^[119][120]

ΑΛΜ – Alpha Lambda Mu, 2014-2020, dormant ^[121][122]