Marriage is a social union or legal contract between individuals that creates kinship. It is a common practice among most groups of humans in all encountered galaxies.
When Ronon Dex and Teyla Emmagan journeyed to a village to meet three people who bragged about killing Wraith (who turned out to be Satedans), Teyla was approached by a Villager who believed her to be the arranged bride for him, when he discovered otherwise he asked if she was perhaps seeking a husband. (SGA: "Reunion")
- In an alternate reality which Daniel Jackson visited in 1998, Brigadier General Jack O'Neill and Doctor Samantha Carter were engaged. However, they were both killed during the devastating Goa'uld attack on their Earth before they could marry. (SG1: "There But for the Grace of God")
- In another alternate reality, Colonel Jack O'Neill and Doctor Samantha Carter had been married for a year by 1999. Sam was widowed when Jack was killed by Teal'c, the First Prime of Apophis, during the Goa'uld invasion of Cheyenne Mountain in that year. (SG1: "Point of View")