2 February 1957 05:00 - Presidio, California , USA -   An object was tracked by radar. One object was observed by military witnesses for over four minutes. Explanation: Aircraft.

7 February 1957 03:53 - Las Cruces Afs, New Mexico, USA -   Radar. Explanation: Mirage.

13 February 1957 02:30 - Lincoln AFB, Nebraska, USA -   Two radars and USAF ground observers tracked several supersonic targets, flying behind an airliner, that broke apart, hovered, and sped away. Explanation: Balloon.

13 February 1957 04:40 - Tierra Amarilla Afs, New Mexico, USA -   Radar/visual confirmation.

13 February 1957 20:00 - Marrero, Louisiana, USA -   Objects were tracked by radar and sighted visually. Three objects were observed by a male military witness for 100 minutes (Martin). Explanation: Aircraft.

27 February 1957 21:45 - Castle AFB, California , USA -   Nine radar targets. Explanation: Mirage.

23 March 1957 23:50 - Long Beach, California , USA -   CAA incident. Explanation: Malfunct.

29 March 1957 - -   Visual observation from aircraft

29 March 1957 19:30 - North Atlantic, Off Florida, Atlantic -   An object was tracked by radar and sighted visually. One object was observed by three witnesses for five minutes.

29 March 1957 19:30 - Bahamas N, Atlantic -   Pan Am 206A incident.

4 April 1957 - Wigtownshire, UK -   Ground observation

4 April 1957 Noon - Europe -   An object was tracked by radar and sighted visually. One object was observed on the ocean.

4 April 1957 12:00 - West Freugh, UK -   Multiple radar confirmation. three radar posts tracked UFO at 60,000 feet, dove to 14,000 feet, circled, sped away

10 April 1957 20:30 - Ogden, Utah, USA -   An object was tracked by radar and sighted visually. One object was observed for over ten minutes (Baker). Explanation: Balloon.

29 April 1957 21:00 - St Margaret'S Bay, UK -   Radar. Explanation: Aircraft.

29 April 1957 22:00 - English Channel, UK -   An object was tracked by radar. One object was observed on the ocean. Explanation: Aircraft.

4 May 1957 03:25 - California , USA -   Pilot saw a yellowish-red light at 10,000 feet

11 May 1957 - Coast New England, USA -   GOC incident.

29 May 1957 15:03 - Houma, Louisiana, USA -   Radar. Explanation: Mirage.

30 May 1957 10:01 - Detroit, Michigan, USA -   Radar. Explanation: Aircraft.

In June 1957 - Invercargill, New Zealand -   Objects were tracked by radar and sighted visually. Many objects were observed for 232 minutes.

3 June 1957 20:30 - Shreveport, Louisiana, USA -   Transport pilots sight, and two ground radars track, two objects which follow them for an hour, and which respond when they flash their running lights.

3 June 1957 21:35 - Shreveport, Louisiana, USA -   Trans-Texas Airline incident.

7 June 1957 - -   Multiple ground sightings, New Jersey and Atlantic Coast

14 June 1957 13:14 - McChord AFB, Washington, USA -   An object was tracked by radar. One object was observed by military radar at an airfield for 33 minutes. Explanation: Balloon.

16 June 1957 13:58 - Las Vegas, Nevada, USA -   Radar tracked an inbound target at average speed of about 6,200 mph for 48 seconds

17 June 1957 - Ohakea Afb, New Zealand -   Vampire incident.

17 June 1957 - Gulfport, Mississippi, USA -   Radar-transmitting UFO which correlated with visual of brilliant white-red light

20 June 1957 - Bluff Hill, New Zealand -   An object was tracked by radar. An unidentified object was tracked by radar.

16 July 1957 12:56 - Las Vegas, Nevada, USA -   An object was tracked by radar. One object was observed by military witnesses for 2.2 minutes. Explanation: Malfunct.

17 July 1957 04:30 - Gulfport, Mississippi, USA -   RB-47 case: object follows bomber for 90 minutes, and is simultaneously tracked visually, by ground and airborne radar, and by on-board ELINT sensors.

17 July 1957 05:10 - Meridian, Mississippi, USA -   RB-47 incident. Explanation: Meteor.

18 July 1957 10:46 - Mt. Lemmon, Arizona , USA -   Height-finder radars tracked a stationary target at 42,000 ft

18 July 1957 22:46 - Mount Lemmon Afs, Arizona , USA -   An object was tracked by radar. One object was observed by military witnesses at an airfield for 34 minutes. Explanation: Debris.

24 July 1957 10:00 - Nemuro Strait, Japan -   USAF F-86 incident.

24 July 1957 10:00 - Nemuro, Japan -   F-86 fighters scrambled to intercept disc-shaped object

25 July 1957 00:25 - Niagara Falls, New York, USA -   Circular brilliant white object with smaller 6? pale green lights. Explanation: Balloon.

3 August 1957 - San Francisco, California, USA -   Radar detected a target on IFF Mode Two transponder only

3 August 1957 06:45 - Northern Part, California , USA -   Radar. Explanation: Mirage.

21 August 1957 19:58 - Cambria Afs, California , USA -   Radar/visual confirmation. Explanation: Mirage.

27 August 1957 15:45 - Dry Tortugas, Florida, USA -   Military Plane incident. Explanation: Mirage.

27 August 1957 16:45 - Dry Tortugas, Florida, USA -   Crew of aircraft saw pulsating object

30 August 1957 22:10 - Chesapeake Bay, Virginia , USA -   CAL incident.

30 August 1957 22:10 - Norfolk, Virginia, USA -   A brilliant object appeared for several minutes above an airliner, then dissolved. It was also tracked on radar.

12 September 1957 18:00 - Tulsa, Oklahoma, USA -   Whitson case. Explanation: Malfunct.

19 September 1957 01:30 - Fort Worth, Texas, USA -   "Unexplained aspect is the large range of distances, bearing angles, and. altitudes covered by the UFO."

20 September 1957 - Texas, USA -   Air Force RB-47, 6 man crew, followed for hour then buzzed by bright white light, painted aircraft with radar 2800 mcs. Explanation: Inversion.

20 September 1957 14:18 - Benson, Pennsylvania, USA -   Radar. Explanation: Debris.

20 September 1957 16:00 - Montauk, New York, USA -   High speed 2,300 mph radar target at 50,000 feet altitude tracked/ multiple radars. Explanation: Malfunct.

30 September 1957 00:00 - Fort Worth, Texas, USA -   B-47 and radar track a bright, white light without apparent substance from Louisiana to Texas

13 October 1957 - Invercargill, New Zealand -   An object was tracked by radar. An unidentified object was tracked by radar for several hours.

14 October 1957 19:00 - San Diego, California , USA -   USN incident. Explanation: Weather.

19 October 1957 - Mildenhall, UK -  

21 October 1957 - London, UK -   An unidentified object was tracked by radar and sighted visually.

21 October 1957 21:18 - London, UK -   An object was tracked by radar and sighted visually. One object was observed by one experienced male military witness near a nuclear test site.

21 October 1957 21:18 - RAF Gaydon, UK -   RAF incident. RAF pilot near collision with object

22 October 1957 14:00 - Wiesbaden, Germany -   Radar. Explanation: Mirage.

23 October 1957 03:10 - Loring Afb S12M, Maine, USA -   An object was tracked by radar and sighted visually. One object, of huge size, was observed by a male military witness at an airfield for 11 minutes.

29 October 1957 - Air Base, UK -   An object was tracked by radar and sighted visually. An unidentified object was tracked by radar and sighted visually at an airfield.

In November 1957 - Uss Sebago, Gulf of Mexico -   An object was tracked by radar and sighted visually. An unidentified object was tracked by radar and sighted visually by military witnesses in a warship.

4 November 1957 22:45 - Kirtland AFB, New Mexico, USA -   USAF Air Traffic Controllers track and observe visually an object, car-shaped, 18 feet high, that buzzes their runway. It hovers like a helicopter but accelerates away like a jet. Official explanation: (classified?) aircraft ( ! )

5 November 1957 - Eglin AFB, Florida, USA -   Sebago Case. A maneuvering star-like object was tracked by radar and sighted visually by the US Coast Guard cutter Sebago. Explanation: radar malfunction.

5 November 1957 - Selma, Alabama, USA -   Three USAF pilots at Selma saw a bright object

5 November 1957 05:20 - Keesler AFB, Mississippi, USA -   Radar/visual confirmation. Ellipitical UFO accelerated rapidly; disappeared into clouds

5 November 1957 05:21 - Uscg Sebago, Gulf of Mexico -   Crewmen incident. Explanation: Mirage.

6 November 1957 - Kagoshima, Japan -   An object was tracked by radar. An unidentified object was tracked by radar only by military radar. Explanation: Weather.

6 November 1957 - Laredo AFB, Texas, USA -   An object was tracked by radar. An unidentified object was tracked by radar only by military witnesses at an airfield. Explanation: Mirage.

6 November 1957 04:20 - Whiteman AFB, Missouri, USA -   An object was tracked by radar. An unidentified object was tracked by radar only by military radar at an airfield. Explanation: Mirage.

7 November 1957 - Harlingen AFB, Texas, USA -   Explanation: Malfunct.

14 November 1957 - Rothwesten, Germany -   An object was tracked by radar. An unidentified object was tracked by radar only by military witnesses. Explanation: Mirage.

21 November 1957 - Houma, Al, Louisiana, USA -   An object was tracked by radar. An unidentified object was tracked by radar only by military witnesses. Explanation: Mirage.

23 November 1957 - Joliet, Illinois, USA -   An object was tracked by radar. An unidentified object was tracked by radar only by radar. Explanation: Balloon.

25 November 1957 22:00 - Hurlburt Field S, Florida, USA -   USAF B-66 incident.

25 November 1957 22:00 - Eglin AFB, Florida, USA -   An object was tracked by radar. One ball was observed by witnesses and by radar at an airfield. Explanation: Aircraft.

30 November 1957 - Minot, North Dakota, USA -   An object was tracked by radar. An unidentified object was tracked by radar only by military radar. Explanation: Mirage.

1958 - Canada -   DEW Line radar, ground observation

1958 - -   AF Base in SW United States

3 December 1957 - Clinton, Tennessee, USA -   An object was tracked by radar. An unidentified object was tracked by radar only by military witnesses. Explanation: Weather.

11 December 1957 - Lake City, Tennessee, USA -   An object was tracked by radar. An unidentified object was tracked by radar only by military radar. Explanation: Balloon.

11 December 1957 - Parkersburg, West Virginia, USA -   Considered by USAF as resulting from a combination misidentification of the Moon with a radar inversion. Explanation: Mirage.

11 December 1957 22:00 - Lockbourne Afb, Ohio, USA -   USAF F-86 87th FIS incident.

11 December 1957 22:30 - Guthrie, Pennsylvania, USA -   Pilots, radar, track orange circular object. Explanation: Mirage.

12 December 1957 - Tokyo, Japan -   GCI radar tracked, seen by ground, vari-colored UFO, jets scrambled

13 December 1957 - Misawa, Japan -   Military radar with visual confirmation. Radar explained as anom propagation. Visual sighting explained as Venus. Explanation: Mirage.

19 December 1957 19:32 - Pepperrell Afb, Newfoundland, Canada -   An object was tracked by radar and sighted visually. An unidentified object was tracked by radar and sighted visually by military witnesses at an airfield. Explanation: Balloon.

23 December 1957 - Vladivostok, Russia -   An object was tracked by radar. An unidentified object was tracked by radar only by military witnesses.