Comics
Adventures Into Fear #20
Adventures Of Cyclops & Phoenix #1-4
Alpha Flight (1st series) #111
Amazing Adult Fantasy #17
Amazing Adventures (2nd series) #11, 15
Amazing Spider-Man (1st series) #282
Amazing Spider-Man (1st series) Annual #1
Amazing Spider-Man (2nd series) #36, 57-58, 500
Astonishing X-Men (2nd series) #1-3
Astonishing X-Men (3rd series) #1-14
Avengers (1st series) #3, 53, 60, 110-111, 350-351, 368
Bizarre Adventures #27
Black Panther (4th series) #16
Cable #6-8, 16-17, 20, 29, 44, 50, 74, 76-77
Cable & Deadpool #7-10
Captain America (1st series) #172-175
Civil War #1-2
Classic X-Men #1-10, 13-15, 17-20, 22-23, 25-28, 41-42
Contest of Champions #5
Cyclops #1-4
Damage Control (3rd series) #4
Darkhawk #30-31
Dazzler #38
DC Versus Marvel Comics #1
DC/Marvel: All Access #3-4
Decimation: House of M - the Day After
Excalibur (1st series) #57-58, 96, 100, 116
Excalibur: XX Crossing
Exiles #69
Fantastic Four (1st series) #28, 35-36, 312, 367-370
Fantastic Four (1st series) Annual #3
Fantastic Four: The World's Greatest Comics Magazine! #3
Further Adventures Of Cyclops & Phoenix #1-4
Gambit (3rd series) #8
Gambit (4th series) #10
Generation M #1-2 (poster shot only for #2),6
Generation X #27
Ghost Rider (2nd series) #34
Ghost Rider (3rd series) #9, 26-27
Giant-Size X-Men #1
Hercules #1
House of M #1-2, 5-8
Incredible Hulk (2nd series) #172, 278, 336-337, 445, 455
Infinity Crusade #1-6
Infinity Gauntlet #3-4
Infinity War #1-6
Iron Fist (1st series) #11, 15
Iron Man (1st series) Annual #8
Journey Into Mystery (1st series) #109
Journey Into Mystery (2nd series) #513
Marc Spector: Moon Knight #41
Marvel Comics Annual 1998 Starring Cable and Machine Man
Marvel Comics Annual 1998 Starring X-Men and Dr. Doom
Marvel Comics Presents #17-24, 85, 89
Marvel Fanfare #4
Marvel Graphic Novel #1, 5
Marvel Holiday Special 1996, 2004
Marvel Super-Hero Contest of Champions #1
Marvel Super-Heroes Secret Wars #1-12
Marvel Tales (2nd series) #262
Marvel Team-Up (1st series) #4, 23, 53
Marvel Team-Up (1st series) Annual #1
Marvel Team-Up (3rd series) #5
Marvel Two-In-One #96
Marvel Two-In-One Annual #7
Marvel Valentine Special #1
Marvel: Heroes & Legends #1
Marvels #2
Mephisto vs... #2-3
New Avengers #8-10
New Excalibur #4
New Mutants (1st series) #64, 76, 88, 95-97
New Mutants (1st series) Annual #7
New Mutants (2nd series) #10
New Warriors (1st series) #13, 27
New X-Men (1st series) #114-128, 131, 134-139, 142-146, 149-151, 154-156
New X-Men 2001 Annual
New X-Men: Academy X #1-6, 8-14
New X-Men (2nd series) #20-24, 26-27
Nightcrawler (3rd series) #1, 12
Onslaught: Marvel Universe
Onslaught: X-Men
Power Man & Iron Fist #57
Power Pack #27, 35
Quasar #28, 38-40
Secrets of the House of M
Secret War #5
Sensational Spider-Man #10
Sentinel Squad O*N*E* #5
Silver Surfer (3rd series) #55, 123
Special Edition X-Men #1
Spider-Man Team-Up #1
Spider-Man Unlimited (1st series) #6
Storm (1st series) #1-2, 4
Strange Tales (1st series) #156
Sub-Mariner (1st series) #14
Tales of Suspense (1st series) #49
Tales of the Marvels: Wonder Years #2
The Order #5
Thing (2nd series) #8
Thor (1st series) #233, 374
Thor Corps #3
Thunderbolts (1st series) #33, 55, 57-58
Uncanny Origin #1
Uncanny X-Men #143-159, 161-168, 170-177, 181, 185, 197, 199-201, 210, 223, 232, 242-243, 272-274, 280, 288, 294, 296, 308, 316, 318, 322, 328, 331-339, 342, 350-359, 368, 375-378, 391-394, 411-412, 416, 421, 423-426, 429, 444, 466-469, 473
Uncanny X-Men Annual #5-6, 9, 14, 16, '97 Annual
Untold Tales of Spider-Man #21
Untold Tales of Spider-Man '97 Annual
Warlock And The Infinity Watch #18-19
Weapon X (2nd series) #15, 18
Web Of Spider-Man #104-105
What If...? (2nd series) #60
Wolverine (1st series) #4
Wolverine (2nd series) #50-51, 65, 75, 85, 91, 101, 111, 115-118, 145, 173
Wolverine (3rd series) #25, 42
Wolverine/Captain America #4
Wolverine Origins #4-5
Wonder Man (2nd series) #13-14
X4 #1, 3-5
X-Factor (1st series) #1-63, 65-71, 78, 84-86, 91, 115, 149
X-Factor (1st series) Annual #1-6
X-Factor (2nd series) #1, 3-4
X-Factor (3rd series) #7
X-Factor: Prisoner of Love
X-Force (1st series) #16-19, 43-44, 55, 116
X-Man #25, 53-55
X-Men (1st series) #1-46, 48-66, 94-138
X-Men (1st series) Annual #3
X-Men (2nd series) #1-26, 28-30, 35, 38-46, 48, 50-57, 59-66, 70-71, 88, 92, 94-98, 112-113, 157, 165, 173-174, 177-186
X-Men (2nd series) Annual #1-2, '95 Annual, '96 Annual, '97 Annual
X-Men: Books of Askani #1 (profile only)
X-Men: Colossus Bloodline #1
X-Men: Deadly Genesis #1-6
X-Men: Kitty Pryde: Shadow & Flame #1
X-Men: Liberators #2
X-Men: Phoenix - Endsong #1-5
X-Men: Prime
X-Men: The Hidden Years #1-22
X-Men: The 198 #1-5
X-Men: The Search For Cyclops #1-4
X-Men & Alpha Flight #1-2
X-Men & ClanDestine #1
X-Men & Power Pack #4 (not in continuity)
X-Men/Alpha Flight #1-2
X-Men/Fantastic Four #1-5
X-Men Forever #3
X-Men Spotlight on... Starjammers #2
X-Men Unlimited (1st series) #1, 6, 10, 12-13, 15, 25, 31-32
X-Men Unlimited (2nd series) #1-2, 4-6, 8-11, 13
X-Statix #26
X-Terminators #1
Youngblood/X-Force

Movies
In the feature film X-Men and its sequels X2 (2003) and X-Men: The Last Stand (2006), Cyclops is portrayed by actor James Marsden.

Television Series
X-Men: The Animated Series (1992 - 1997)
Cyclops was voiced by Norm Spencer. In this version, Scott was the established team leader and was in a relationship with Jean Grey from the beginning of the series. During a battle with the government team known as X-Factor, Scott had to fight his brother Alex, aka Havok. Though neither of the two seemed aware that they were brothers of each other, even though their powers had no effect on each other. When the series ended, Scott and Alex never had the chance to discover they are related.

X-Men: Evolution (2000 - 2003) Cyclops was voiced by Kirby Morrow. Here, Scott Summers is the X-Men's field leader. In contrast to his mainstream version, this version of Scott is a confident and self-assured leader with a much more extroverted personality; his teammates all look up to him, especially since he was Xavier's original recruit; Rogue even appears to have a crush on him. He has a slightly rockier, almost love/hate relationship with Jean Grey in this version for a time, although they later admitted their feelings after Scott was separated from the X-Men, lacking his glasses, and was discovered by Jean during a battle with Mystique. After graduating from Bayville High, he has become an instructor at Xavier's Institute for Gifted Children and is currently romantically involved with Jean. He also shares a close big-brother/little brother relationship with Nightcrawler. In this series, Scott later learned that Alex, his brother, was still alive, and they often shared conversation by either telephone or actually meeting up with each other, although Alex declined full-time X-men membership. The fate of their parents is unclear in this series, though.

Source: ComixFan.com & Wikipedia