Major works of hers include:
- The Vorkosigan Saga
- The Chalion series
- The Sharing Knife series
- The Spirit Ring, a standalone novel based on the legend of The Grateful Dead. (No, not the band, which took its name from the same legend.)
Some tropes common to Lois Bujold's works are:
- Author Appeal
- The angsty, experienced older man/spunky but naive young woman pairing shows up in a number of Bujold's other works, including Falling Free, The Curse of Chalion, and The Hallowed Hunt.
- Also, group marriage. The notion that one can be sincerely in love with more than one person at a time shows up at least once per series:
- Vorkosigan Saga: Cordelia mentions an Armsman who has one wife in the city and one in the country, is chronically stressed by the expense and the secrecy, but can't bear to choose between them and seems to truly love both.
- Chalion: Dowager Royina Ista tells of the close but non-romantic relationship she had with her husband's male lover, and how much her husband loved them both.
- The Sharing Knife: A Lakewalker woman is married to two men. The original couple couldn't have children—all-important in Lakewalker culture—but they didn't want to split up, so they just brought in an extra husband.
- Weddings in general. Most of her books have someone getting married in them.
- Bujold is one of the few authors who portrays Uterine Replicators as being clearly better for the baby, the mother, and society in general, and not as a symptom of a dehumanizing dystopia. She's also had two kids. (She also makes sure to note that Cordelia and Fawn have access to the good anti-nausea medication during their pregnancies.)
- More minor than the others, but she also seems to like the name 'Dag', using it for the hero of The Sharing Knife, Miles' Cetagandan opposite number Ghem-Colonel Benin, and a minor character mentioned in passing in Ethan of Athos.