Below is the complete list of special guests who appeared onstage or performed with Swift on the 1989 World Tour.

May 15, 2015 – Las Vegas: "Tenerife Sea" with Ed Sheeran
May 30, 2015 – Detroit: "Radioactive" with Dan Reynolds of Imagine Dragons; Martha Hunt & Gigi Hadid.
June 6, 2015 – Pittsburgh: "Pontoon" with Little Big Town.
June 12, 2015 – Philadelphia: "Cool Kids" with Echosmith; Cara Delevingne & Mariska Hargitay.
June 13, 2015 – Philadelphia: "Fight Song" with Rachel Platten; Mariska Hargitay.
June 27, 2015 – London: Gigi Hadid, Kendall Jenner, Serena Williams, Martha Hunt, Karlie Kloss and Cara Delevingne.
July 10, 2015 – East Rutherford: "Can't Feel My Face" with The Weeknd; Heidi Klum and United States women's national soccer team; Lily Aldridge, Lena Dunham, Gigi Hadid and Hailee Steinfeld.
July 11, 2015 – East Rutherford: "Jealous" with Nick Jonas; Gigi Hadid, Martha Hunt, Lily Aldridge, Candice Swanepoel, Behati Prinsloo, Karlie Kloss, and Uzo Aduba.
July 13, 2015 – Washington, D.C.: "Royals" with Lorde.
July 14, 2015 – Washington, D.C.: "Want to Want Me" with Jason Derulo.
July 18, 2015 – Chicago: "Honey, I'm Good." with Andy Grammer; Serayah.
July 19, 2015 – Chicago: "Take Your Time" with Sam Hunt; Andreja Pejić & Lily Donaldson.
July 24, 2015 – Foxborough: "Shut Up and Dance" with Walk the Moon.
July 25, 2015 – Foxborough: "Classic" with MKTO.
August 1, 2015 – Vancouver: "Am I Wrong" with Nico & Vinz.
August 8, 2015 – Seattle: "Trap Queen" with Fetty Wap; Ciara and Russell Wilson.
August 14, 2015 – Santa Clara: "Worth It" with Fifth Harmony.
August 15, 2015 – Santa Clara: "Black Magic" with Little Mix; Joan Baez and Julia Roberts.
August 21, 2015 – Los Angeles: "Counting Stars" with Ryan Tedder of OneRepublic; Kobe Bryant presenting Swift with a banner hung on the Staples Center rafters in honor of Swift's 16 sold out shows, the most of any recording artist at the arena.
August 22, 2015 – Los Angeles: "White Horse" with Uzo Aduba; Chris Rock, Matt LeBlanc and Sean O'Pry; "Doubt" and "Family Affair" with Mary J. Blige.
August 24, 2015 – Los Angeles: "Goodbye Earl" with Natalie Maines of the Dixie Chicks; Ellen DeGeneres; "You Oughta Know" with Alanis Morissette.
August 25, 2015 – Los Angeles: "Dreams" with Beck and St. Vincent; "All of Me" with John Legend.
August 26, 2015 – Los Angeles: "Good for You" with Selena Gomez; "Smelly Cat" with Lisa Kudrow; "Mirrors" with Justin Timberlake.
August 29, 2015 – San Diego: "Cheerleader" with OMI; "Complicated" with Avril Lavigne.
September 9, 2015 – Houston: "See You Again" with Wiz Khalifa.
September 16, 2015 – Indianapolis: "If I Die Young" with The Band Perry.
September 18, 2015 – Columbus: "Cool Kids" with Sydney Sierota of Echosmith.
September 21, 2015 – Kansas City: "Every Mile a Memory" with Dierks Bentley.
September 25, 2015 – Nashville: "Love Me Like You Mean It" with Kelsea Ballerini; "I Don't Want to Miss a Thing" with Steven Tyler of Aerosmith; "When You Say Nothing at All" with Alison Krauss.
September 26, 2015 – Nashville: "Bleeding Love" with Leona Lewis; "(I Can't Get No) Satisfaction" with Mick Jagger of The Rolling Stones.
September 29, 2015 – St. Louis: "The Fix" with Nelly, and "Hot in Herre" with Nelly and Haim. To celebrate Haim's last night on the tour, Swift invited them to join her onstage as back-up dancers for Nelly.
October 2, 2015 – Toronto: "John Cougar, John Deere, John 3:16" and "Somebody Like You" with Keith Urban.
October 3, 2015 – Toronto: "Boom Clap" with Charli XCX.
October 17, 2015 – Arlington: "Love Me like You Do" with Ellie Goulding.
October 21, 2015 – Greensboro: "Little Red Wagon" with Miranda Lambert.
October 24, 2015 – Atlanta: "Talking Body" with Tove Lo.
October 27, 2015 – Miami: Dwyane Wade presenting Swift a "13" numbered jersey in honor of Swift's lucky number and his 13th season with the Miami Heat; "Give Me Everything" with Pitbull; "Livin' la Vida Loca" with Ricky Martin.
October 31, 2015 – Tampa: "Here" with Alessia Cara; "Let It Go" with Idina Menzel. During "Style", before "Let It Go" was performed, Swift wore an Olaf costume while Menzel wore her in-voice character Elsa, both from Frozen, in honor of Halloween.