"Things Have Changed" is a song from the film Wonder Boys, written and performed by Bob Dylan and released as a single on May 1, 2000. It won the Academy Award for Best Original Song and the Golden Globe Award for Best Original Song. It was included in the compilation albums The Essential Bob Dylan in 2000, The Best of Bob Dylan in 2005 and Dylan in 2007.

Brian Hiatt, writing in Rolling Stone, where the song placed first on a 2020 list of "The 25 Best Bob Dylan Songs of the 21st Century", saw it as a stylistic about-face from 1997's Daniel Lanois-produced Time Out of Mind and the beginning of an important new chapter in Dylan's career: "The effortless feel of the playful-yet-ominous, hard-grooving, utterly dazzling 'Things Have Changed' was an early indication of the renewed friskiness of Dylan’s 21st-century work — and the vividly live-in-the studio creations he would achieve as his own producer, with the help of engineer Chris Shaw".

The song was inspired by a meeting with country musician Marty Stuart and Stuart's song "The Observations of a Crow" from the concept album The Pilgrim. Dylan critics disagree about when this song was recorded. According to Olof Björner, "Things Have Changed" was recorded in May 1999 at Sterling Sound studios in New York. Clinton Heylin, in his account of Dylan's songs between 1974 and 2008, believes the song was recorded at Sony Studios, New York, probably on July 25 and 26, 1999. On these latter dates, Dylan was touring the US with Paul Simon.

The musicians who accompanied Dylan were his touring band at the time: Charlie Sexton and Larry Campbell on guitar, Tony Garnier on bass and David Kemper on drums and percussion. Kemper said, "We were touring and had a day off in New York. Bob said, 'Tomorrow let's go into the studio. I got a song I want to record.' We went in and played "Things Have Changed" with only an engineer. We did two takes. The first was a New Orleans thing. The second was what you hear. So in about five hours we learned it, recorded it, mixed it."

The engineer Chris Shaw has confirmed there was another version, which "was really great, which had a kind of New Orleans shuffle to it". Shaw hoped to include this unreleased version on Volume 8 of Dylan's Bootleg Series, Tell Tale Signs. When the studio recording could not be located, it was replaced by a live version recorded in Portland, Oregon, on June 15, 2000. The song was recorded in the key of G minor.

Chris Shaw did a rough mix of the song the same day it was recorded, which became the final mix. As he explained to Uncut, "We did 'Things Have Changed' in one afternoon, and when we were done we did a very quick mix of it, and I thought it was just going to be a rough mix to give to Bob who’d maybe give it to someone else, like Daniel Lanois, who’d wind up engineering and mixing the final thing. But it turned out that that rough mix ended up being the final mix. And that was pretty funny, because the very last thing Bob did was raise the shaker up like 10db, making it ridiculously loud, and that was the mix he wanted to go with."

Clinton Heylin has written that "Things Have Changed" demonstrates a close knowledge of the film Wonder Boys, for which it was written. The lyrics make reference to "dancing lessons", "the jitterbug rag" and dressing "in drag", all of which feature in the plot of the film.

Curtis Hanson, the director of Wonder Boys, has recalled: "I learned that Dylan might be interested in contributing an original song… So when I came back from filming in Pittsburgh, Bob came by the editing room to see some rough cut footage. I told him the story and introduced him to the characters. We talked about Grady Tripp and where he was in life, emotionally and creatively. Weeks later a CD arrived in the mail".