The location of Jane Eyre's (Mia Wasikowska's) cottage was so isolated that there was no mobile phone reception. A member of the crew had to be stationed in a nearby phone booth with a walkie talkie in case the crew needed anything. He didn't complain, however, as the local residents brought him tea and biscuits throughout the day.

To help create the gothic atmosphere present in this movie, many shots were lit exclusively by firelight or candlelight.

While shooting the climactic post-wedding scene between Jane Eyre (Mia Wasikowska) and Mr. Edward Rochester (Michael Fassbender), filming had to be stopped repeatedly because Fassbender's suspenders (British: braces) kept breaking and had to be re-sewn.

While the majority of the book takes place in the 1830s, Director Cary Joji Fukunaga changed the timeline so that most of this movie took place about a decade later, because he felt that mid-1830s fashions were very over-the-top and unflattering, and wanted to dress Mrs. Reed (Sally Hawkins) in those styles rather than Jane Eyre (Mia Wasikowska).

Director Cary Joji Fukunaga chose not to film any footage of Thornfield Hall burning down because he wanted this movie to feel like the novel, which is entirely first-person from Jane's perspective. In the book, Jane is not present for the fire, and Fukunaga didn't feel there was a way to include it organically in the movie.

Romy Settbon Moore (Adèle Varens) was cast in part because she speaks fluent French. Director Cary Joji Fukunaga held auditions at a local bilingual school to find a girl who could convincingly play a French child but who could also understand his direction.

Ellen Page was the first choice for the lead role, but withdrew when production was delayed. Mia Wasikowska was later cast.

The location used for the Reed's home, Gateshead, is the same house where Gosford Park (2001) was filmed.

Mia Wasikowska had short, blonde hair during production and had to wear a wig for all of her scenes.

Director Cary Joji Fukunaga wanted a scene to illustrate how much Mr. Rochester's (Michael Fassbender's) presence at Thornfield Hall disrupted the lives of its permanent residents, so he wrote the dinner scene, in which Mrs. Fairfax (Dame Judi Dench), Jane (Mia Wasikowska), and Adèle Varens (Romy Settbon Moore) try to carry on a conversation while Mr. Rochester fires a gun right outside the window. This scene does not take place in the novel, and in this movie's commentary, Fukunaga claims it was the only original scene written for the movie.

This is possibly the first adaptation of Jane Eyre in which her rival, Blanche Ingram, is shown as described in the book: a striking black haired woman (played by Imogen Poots, who is usually seen sporting blonde hair). In most other adaptations, she's played by women with bright blonde hair, likely as a contrast to dark-haired Jane.

During the scene where Mrs. Fairfax, Adèle, and Jane are eating while Mr. Rochester is shooting birds, Director Cary Joji Fukunaga would play music in ear pieces that the actors and actresses wore to make them react to the gunshots. At one point, he forgot that Romy Settbon Moore was on-set and played a song with explicit language, causing Romy's mother to scowl at him.

Interestingly, this is the first adaption in which Mr. Rochester is more affectionate towards Jane in earlier scenes as opposed to the book.

The logo for the popular movie website Gordon and the Whale (owned by Chase Whale) appears towards the end of the movie as a watercolor painting. Director Cary Joji Fukunaga discussed this in an interview with MakingOf.com

Lynne Ramsay was asked to direct, but turned down the offer.

Mia Wasikowska and Jamie Bell appeared in Defiance (2008).

Sally Hawkins (Mrs. Reed) previously played Craig Roberts' (John Reed's) mother in Submarine (2010).

Michael Fassbender and Imogen Poots appeared in Centurion (2010).

The purchasing power of one British pound in 1826 was about equal to seventy pounds in 2012. That would make the fortune left to Jane Eyre worth about two million pounds sterling.

When Adèle tells Jane about the ghost that haunts the house, there is a doll dressed in white in the top window of her doll house. This foreshadows events later in this movie, since the ghost is actually a mad woman dressed in white who lives in the attic.