Sif is a Norse goddess and the wife of Thor.

Sif or SIF may also refer to:

People

  • Sif Atladóttir (born 1985), Icelandic footballer
  • Sif Ríkharðsdóttir, Icelandic academic
  • Sif Ruud (1916–2011), Icelandic actress
  • Sif Rykær (born 1988), Danish footballer
  • Sif Saga (born 1997), Icelandic model

Characters

  • Sif (character), the Norse goddess as portrayed in Marvel Comics
  • Sif (Marvel Cinematic Universe), the character's portrayal in the MCU
  • Sif (Dark Souls), a character in the video game Dark Souls

Places

  • Sif, Yemen
  • Sif Glacier, Greenland
  • Sif Island, Antarctica

Government and politics

  • State Secretariat for International Finance, of the Government of Switzerland
  • Society for Individual Freedom, a British association promoting individual freedom
  • Somali Islamic Front, also known as Jabhatul Islamiya
  • Strategic Innovation Fund, a program of the Government of Canada
  • Syrian Islamic Front
  • Statutes in Force, the 4th revised edition of the statutes in the United Kingdom

Science and technology

  • Italian Physical Society ()
  • Safety instrumented function
  • Schools Interoperability Framework, a data-sharing specification
  • Selective Identification Feature, used to identify aircraft
  • Small intensely fluorescent cell
  • Source Input Format, a MPEG-1 video format
  • Standard Interchange Format, a format for geographic data
  • Stress intensity factor, used in fracture mechanics to predict the stress state

Sport

  • Supreme Indoor Football, a defunct American sport league

Clubs

  • SÍF Sandavágur, a Faroese football club
  • Sandvikens IF, a Swedish football club
  • Silkeborg IF, a Danish football club
  • Stattena IF, a Swedish football club in Helsingborg
  • Stavanger IF, a Norgwegian football and handball club
  • SIF Stadion, their home venue
  • Stocksunds IF, a Swedish sport club in Stocksund
  • Strømsgodset IF, a Norwegian sport club
  • Strømsgodset Toppfotball, their professional football team

Transport

  • AirSial, a Pakistani airline
  • Rockingham County NC Shiloh Airport, in North Carolina
  • Simara Airport, in Madhesh Province, Nepal
  • TF-SIF (Dauphin 2), an aircraft operated by the Icelandic Coast Guard from 1985 until 2007
  • TF-SIF (Dash 8), an aircraft operated by the Icelandic Coast Guard since 2009

Other organizations

  • Central European Institute of Philosophy ()
  • Science of Identity Foundation, an American religious organization
  • Seychelles Islands Foundation
  • Shropshire Islamic Foundation
  • Singapore International Foundation, a Singaporean charity
  • Swedish Union of Clerical and Technical Employees in Industry ()

Other uses

  • 4484 Sif, a main-belt asteroid
  • Siamou language
  • Sif Mons, a shield volcano on Venus
  • Specialized investment fund
  • Love Live! School Idol Festival, a mobile game

See also

  • Short Interframe Space (SIFS), the small time interval between the data frame and its acknowledgment