This is a list of all tornadoes that were confirmed by local offices of the National Weather Service in the United States in April 2011. It was, by a wide margin, the most active tornado month in United States history, with 782 tornadoes being confirmed from April 4 to April 30. The first tornado event of the month accompanied a large-scale damaging wind event, during which eight people were killed by falling trees. The severe weather outbreak also produced 46 tornadoes, mainly across Arkansas, Kentucky, and Mississippi. Tornado activity continued into early April 5, where an EF2 tornado in Dodge County, Georgia, resulted in one fatality. A couple tornadoes, EF1 and EF2, struck Pulaski County, Virginia, on April 8, ahead of a second outbreak from April 9–11. This outbreak significantly impacted the Upper Midwest, including Iowa and Wisconsin. Iowa was struck by numerous tornadoes on April 9, including three rated EF3 and one rated EF4, mainly affecting Sac, Buena Vista, and Pocahontas counties. Sixteen tornadoes touched down in Wisconsin on April 10, including an EF3 tornado that struck Merrill, ranking the outbreak as the state's largest April event on record as well as one of the largest single-day outbreaks ever. Although no one was killed, nineteen people were injured during the outbreak.

April 14–16 brought a much larger tornado outbreak across the Southern United States, with 178 tornadoes from Oklahoma to Virginia. A multiple-vortex EF3 tornado struck Tushka and Atoka, Oklahoma on April 14, resulting in major damage and two fatalities. Two more people were killed in Little Rock, Arkansas just after midnight. During the late morning and afternoon of April 15, multiple strong tornadoes impacted Mississippi and Alabama, including six EF3 tornadoes that hit places such as Clinton, Mississippi; Leakesville, Mississippi; De Kalb, Mississippi; Geiger, Alabama; Tuscaloosa, Alabama; and Pine Level, Alabama. In total, twelve people were killed on April 14–15, while 26 more fatalities occurred across North Carolina and Virginia on April 16. Major tornado damage occurred in and around Sanford, Raleigh, Fayetteville, Askewville, and Snow Hill, North Carolina, along with Deltaville and Clopton, Virginia. Like the previous day, April 16 also featured six EF3 tornadoes. Another period of elevated tornado activity took place from April 19–24, with 132 tornadoes over six days. Although the events featured mostly weaker tornadoes, an intense EF3 tornado injured two people in Illinois on April 19 and a violent EF4 tornado struck suburbs of St. Louis, Missouri, causing multiple injuries and severely impacting Lambert–St. Louis International Airport. Weaker activity on April 23–24 led into a much larger outbreak.

From April 25–28, 367 tornadoes occurred across 21 states in the Southern, Midwestern, and Northeastern United States in what became known as the 2011 Super Outbreak. Numerous tornadoes touched down across Texas and Arkansas on April 25, including an EF3 tornado near Hot Springs Village, Arkansas that caused significant damage and killed one person and a long-track EF2 tornado in the Vilonia, Arkansas area that killed four people and injured 16 others while staying down for over an hour. April 26 saw mostly weaker tornadoes and no fatalities, with the notable tornadoes of the day being an EF2 tornado that tracked across parts of Texas and into Louisiana and a brief EF3 tornado that struck Campbell Army Airfield. From the 27th to early on the 28th, a series of devastating, long-tracked, violent tornadoes killed over 300 people throughout an area extending from Mississippi to Virginia. This included eleven tornadoes rated EF4 and four rated EF5. One particularly devastating and long-lived EF5 wedge tornado tore across northern Alabama and into Tennessee, killing 71 people, while a large, long-tracked EF4 wedge tornado caused catastrophic damage in densely populated areas of Tuscaloosa and Birmingham, Alabama, killing 64 people. Over 215 tornadoes occurred on April 27 alone.

Numerous other small towns including Smithville, Mississippi; Cordova, Alabama; Rainsville, Alabama; Ohatchee, Alabama; Cullman, Alabama; Trenton, Georgia; Ringgold, Georgia; Apison, Tennessee; and Glade Spring, Virginia sustained devastating, direct hits from intense tornadoes during the outbreak, with several producing death tolls well into the double digits. 319 tornado-related deaths occurred from April 27–28, bringing the total death toll from April 25–28 to 324 from 31 separate tornadoes; 24 additional fatalities occurred from separate thunderstorm impacts. The outbreak continued during the overnight and into the morning of April 28, with 47 more tornadoes occurring from Florida to New York. Most of the tornadoes very relatively weak and caused comparatively minor damage. Much of the tornado activity ceased by mid-morning, with only ten tornadoes occurring during the afternoon as the outbreak came to an end. This exceptional outbreak was followed by three weak tornadoes in Texas on April 30 to end the month.

During the course of the month, 363 people were killed as a direct result of 43 different tornadoes, while over 3,700 people were injured; most of the casualties occurred on April 27.

United States yearly total

April

April 4 event

April 5 event

April 7 event + List of confirmed tornadoes – Thursday, April 7, 2011EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthDamage EF0RockvilleSolanoCA22:52–22:54Brief tornado damaged a strip mall, a hair salon, and a few signs in a commercial area. Fences were damaged, and a few trees were downed as well.

April 8 event + List of confirmed tornadoes – Friday, April 8, 2011EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthDamage EF2PulaskiPulaskiVA23:35–23:38$Over 200 houses were damaged in Pulaski, of which at least 30 were destroyed. Some homes had entire roofs removed and upper floors destroyed. A couple were knocked off their foundations. Many trees were snapped. Nine people were injured. EF1S of Pulaski to SE of DraperPulaskiVA23:42–23:47$Many houses and a gas station were damaged at Exit 92 on Interstate 81 and a mobile home was destroyed. Many trees were downed along the path.

April 9 event

April 10 event

April 11 event

April 14 to April 16 events

A total of 178 tornadoes touched down in this large tornado outbreak.

April 14 event (Western United States) + List of confirmed tornadoes – Thursday, April 14, 2011EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthDamage EF0SSW of LexingtonMorrowOR23:15–23:16$A brief tornado damaged a pump house on a farm, throwing insulation and lumber up to away. Trees, grass, and weeds were blown down.

April 19 event

April 20 event

April 21 event

April 22 event

April 23 event + List of confirmed tornadoes – Saturday, April 23, 2011EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthDamage EF0N of SeymourJacksonIN05:35–05:42The tornado skipped southeast just north of Seymour. Several structures were damaged, including a house that lost part of its roof. EF0E of ConnersvilleHarrisonKY10:09–10:10UnknownTwo large barns lost tin roofing, a small garage was completely destroyed, two small outbuildings were damaged, and pieces of oak fencing were tossed around. Around two dozen large trees were snapped or uprooted along the path. EF0W of DexterStoddardMO18:31–18:32A large storage building, a garage, and a shed were destroyed, and the roof of a house was damaged by a falling tree. EF0FolsomGrantKY18:59–19:00A garage and barn were destroyed, a home and a trailer were damaged, and numerous trees were downed. EF1ENE of Dry RidgeGrant, PendletonKY19:10–19:15Several houses were damaged, a barn was heavily damaged, and many trees were downed. EF1VisaliaKentonKY19:14–19:15A brief tornado downed numerous trees, damaged an elementary school, and destroyed an outbuilding. EF2Klondike to UrbandaleAlexanderIL19:15–19:19A tall hangar was destroyed at Cairo Regional Airport along with two light aircraft and a camper. Debris was blown onto the airport runways, and an anemometer at the airport was read at . Elsewhere, a mobile home was destroyed, and two homes sustained minor roof damage. Several trees were snapped or uprooted, damaging two trailers and a house. EF1BarlowBallardKY19:29–19:32A metal wall was damaged at a maintenance building in Barlow, and the roof was blown off a storage building at city hall. A barn sustained roof damage, a carport was blown into a tree, and two homes and another carport sustained minor roof damage. Many large trees were downed, some of which fell on homes and caused damage. Three power poles were snapped as well, cutting power to the city water plant. EF2BardwellCarlisleKY19:30–19:35The tornado began northwest of Bardwell and moved southeastward through town. A steel building was destroyed, along with entire walls of older two-story brick business buildings. Debris blocked U.S. 51 and several secondary roads. About thirty large trees were uprooted, along with about a hundred smaller trees, and over a dozen wooden power poles were broken off. Pieces of wood were driven into steel rooftops, walls of homes, and the ground, many windows were blown out, and about twenty homes and businesses sustained partial or total roof loss. A historic church sustained about US$1 million in damage as well. Two people sustained minor injuries. EF1Northern MetropolisMassacIL19:47–19:59This tornado began along the Ohio River and moved eastward through the northern part of Metropolis. Power poles were damaged at a barge-loading facility, the roof was blown off a trailer, and roof and power pole damage occurred at an industrial complex. Just east of the complex, portable buildings were destroyed, and a trailer was overturned. On the north side of Metropolis, homes sustained minor roof damage, more power poles were snapped, and several trees were downed, causing damage to a garage, two vehicles, and two additional homes. Along Interstate 24, part of the metal roof was torn off a large building in an industrial park, a trailer was overturned, and a barn was heavily damaged before the tornado lifted just north of U.S. 45. EF1S of Red Star to NE of Mount JudeaMadison, NewtonAR00:58–01:54Hundreds of trees were downed in the Ozark National Forest, with several falling on homes and vehicles. Several outbuildings were damaged, a chicken house and a barn were destroyed, and many power poles and lines were blown down. EF0NNW of SidneyComancheTX01:13Brief tornado over open land with no damage.

April 24 event