Sigma
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General Motors Sigma platform
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List of Sigma Alpha Mu chapters
Team IG–Sigma Sport
G.I. Joe: Sigma 6
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Austroaeschna sigma
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List of Alpha Sigma Phi chapters, colonies, and interest groups
2021–22 SK Sigma Olomouc season
Pi Sigma Alpha
List of Sigma Gamma Epsilon chapters
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Design for Six Sigma
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Sweetheart of Sigma Chi
Alpha Chi Sigma
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Alpha Sigma Tau
Sigma 7
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Eta Sigma Phi
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Sigma TV
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SAGEM Sigma 30
Sigma 6
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Sigma Star Saga
Beta Phi Sigma
Re Sigma Finance Corp
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Sigma mount
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Sigma Alpha Lambda
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Eugraphe sigma
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List of Sigma Sigma Sigma chapters
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2023–24 SK Sigma Olomouc season
Sigma (Mega Man X)
Sigma Sigma
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Alpha Sigma Rho
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Sigma 300–800mm f/5.6 EX DG HSM lens
Sigma Omicron Epsilon
Sigma 30mm F2.8 EX DN
Phi Eta Sigma
Sigma Films
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Sigma Protocol
Sigma 19mm F2.8 EX DN
Alpha Sigma Phi
List of Nu Sigma Nu chapters
Alpha Phi Sigma
List of Sigma Delta Tau chapters
Sigma Lambda Alpha (sorority)
Sigma Investments (Jordan)
Sigma 200-500mm f/2.8 EX DG lens
Redemption (Sigma and Diztortion song)
Sigma Scorpii
Bloom's 2 sigma problem
List of Phi Sigma Pi chapters
Sigma 60mm F2.8 DN Art
Chi Sigma Iota
List of Delta Sigma Phi chapters
Sigma-ideal
Sigma hole interactions
Ninja Gaiden Sigma 2
Sigma Pi Sigma
Sigma Sport
Zeta Sigma Chi
Sigma Delta Pi
Coming Home (Sigma and Rita Ora song)
Sigma non-innocence
Sigma Virus
Sigma 30mm f/1.4 EX DC HSM lens
Sigma Omicron Pi
Sigma-martingale
Sigma 12-24mm f/4.5-5.6 lens
List of Sigma Kappa members
2024–25 SK Sigma Olomouc season
Gamma Sigma Sigma
Sweethearts of Sigma