The huge dance event will host 20,000 fans across the bank holiday weekend on August 26 to August 27.
Other highlights include dance music stars Gorgon City, Duke Dumont, Jax Jones and Sigma.
Meanwhile other London venues including Electric Brixton will host after parties featuring DJ sets from the biggest names on the bill.
Find out all you need to know about South West Four 2017 below.
What's the full lineup?
Saturday August 26
Main Stage: Pendulum / Tinie Tempah / Sigma / Wilkinson / Duke Dumont / Jax Jones / Marshmello / MistaJam / Naations (live) / Sonny Vodera vs Low Steppa / Tom Zanetti & K.O. Kane.
Ants Stage: Eric Prydz / Solomun / Andhim / Andrea Oliva / Cristoph / Groove Armada (DJ set) / Heidi / Maya Jane Coles / Patrick Topping / Sasha vs Joris Voorn.
MK's Area 10: MK / Gorgon City / Hannah Wants / Claptone / Amine Edge & Dance / Camelphat / KC Lights / TCTS / Julio Bashmore.
Playaz Stage: Congo Natty / Dimension / Goldie vs My Nu Leng / DJ Marky / Fabio & Grooverider / High Contrast / Netsky / Hype b2b Hazard / Camo & Krooked / Friction / SaSaSaS / Sub Zero / Taxman / Annix / Turno.
Capital Stage: Robin Schulz / Jonas Blue / Kungs / Klingande / Sam Feldt (live) / Autograf / Alex Adair / Jerome Price / Don Diablo.
Electric Brixton: Pendulum (DJ set) / Sigma (DJ set) / Wilkinson (DJ set) / Special Guests Delta Heavy / DJ Hype / Rough Tempo DJs.
Ministry Of Sound: Maya Jane Coles / Joris Voorn / Citizenn / The Menedez Brothers / Kristin Velvet / Wax Wings.
Sunday August 27
Main Stage: Deadmau5 / Knife Party / Bakermat / JAUZ / Martin Solveig / Redlight / Sub Focus / Tchami / What So Not / Example & DJ Wire.
Amnesia Stage: Marco Carola / Sven Vath / Loco Dice / Pan-Pot / Matador / Mar-T / The Martinez Brothers.
B-Traits Selects: Audion / B.Traits / Carl Craig Presents Synthesizer Ensemble / Dusky / George Fitzgerald / John Digweed / Max Cooper / Vitalic / Yotto.
The Gallery: Gareth Emery / Nicky Romero / Markus Schulz / Ferry Corsten / Laidback Luke / Cosmic Gate / Andrew Bayer / Ilan Bluestone / Paul Oakenfold.
The Following x Nothing Else Matters: Chris Lorenzo / Zinc / Erick Morillo / Danny Howard / Disciples / Eli & Fur / Icarus /Riton ft Kah-Lo / Sam Divine / Shiba San.
Electric Brixton: Pan-Pot / Davide Squillace / Matthias Tanzmann / Mar-T / Cuartero / Bowler / Special Guest Tiga.
Are tickets still available?
Yes, individual tickets are still available for the Sunday August 27. The day tickets are priced at £62.50 on Ticketmaster here.
Also the after parties for both Saturday and Sunday are available. The Electric Brixton party is priced at £20 on Saturday and £15 on Sunday and Ministry of Sound party is £23 on Saturday.
Alternatively Twickets allows other festival goers to sell their tickets for face value or less, which means you won't be paying hiked prices.
What are the opening times?
Saturday August 26 and Sunday August 27
Opening times: 11.30am to 11pm.
Last entry: 9.30pm.
Bar closing time: 10.30pm.
VIP Guest List last entry: 7pm.
How do I get to South West Four?
By underground: Clapham Common and Clapham South Tube stations are located on the Northern Line (Zone 2).
Clapham Common Station will be closed at the end of the event on both days. Use Clapham South for trains towards central London.
By overground: Clapham High Street is located on the London Overground line from Clapham Junction to Highbury & Islington.
By mainline: Clapham Junction is served by trains departing both London Victoria and London Waterloo. Clapham Junction is fifteen minute walk from the SW4 festival site.
By bus: Nearby bus stops are 35, 37, 88, 137, 155, 255, 345, 355, 417. The night buses are N35, N37, N155, N137, N345.
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