Diary of a Wimpy Kid: Wrecking Ball is a children's novel written by Jeff Kinney and the fourteenth book in the Diary of a Wimpy Kid series. The series follows an unlucky middle school student named Greg Heffley, his family, and his friends. The books are illustrated with simple, black-and-white drawings from Greg's perspective. Wrecking Ball focuses on Greg; his mother, Susan; his father, Frank; and his best friend, Rowley; as the Heffley family renovate their house and prepare to move to a new neighborhood. It was released on November 5, 2019.

In March, Greg goes through his closet for spring cleaning day and reminisces about various objects from his childhood. He then has a yard sale and hires Rowley to make sure nothing is stolen. When it starts raining, Greg's objects on sale are ruined, and he does not sell anything.

Greg's great aunt Reba dies, but the family goes to what turns out to be the wrong funeral (of a man named Robert Law). Later, Greg is very excited about receiving inheritance money. After a family meeting, Susan chooses to spend the money on expanding their house's kitchen, vetoing her family member's eccentric ideas on how to spend the money. To prepare for the construction, Frank tries to teach Greg how to do chores around the house. Greg fears that a monster is in the plumbing while trying to unclog the drain, due to his parents mentioning the large quantities of grout in their bathroom, leading Greg's imagination to believe there was some sort of monster lurking in the plumbing system. When Greg is instructed to paint around his family's hot tub, he discovers a wasp's nest, which Rodrick sprays with the hose. While cleaning the gutters, the ladder falls and Greg is stuck on the roof until he climbs through the master bathroom window above the garage roof. Susan hires professional workers, and Frank decides to send Greg outside to help them. Greg initially argues that it would ruin the quality of his self-proclaimed "buttery" hands, but Frank ignores Greg's protests and sends him outside to help. At first, Greg feels as if the workers didn't give him enough respect, due to the fact they were playing pranks on him. Greg subsequently attempts to make himself of more importance on the construction site, by completing helpful tasks to benefit the workers. A fight starts when Greg (accidentally) ruins one of the workers' lunch deliveries, and Greg quickly backs out of helping outside.

Greg is stressed due to a school-wide test that determines important decisions around his school, such as teacher's salaries and the replacement of core subjects. He writes that now problems are arising at home, including the fact that a large hole has been cut in the side of the house, exposing an infestation of wasps and mice. The recently built extension to the house is demolished due to it being too close to a neighbor's residence, and the rest of the inheritance money is spent on fixing the hole. Later, Susan tells Greg that his school's funding is being cut due to low scores on the test. Greg reasons that during the test, a kid had let the stress lizard (which was previously brought in to lower the stress levels of students) out of its cage, causing panic throughout the school. Susan then suggests that they move to a new school district, to improve Greg's education. Greg is excited about the idea of being in a new school but worries about leaving Rowley behind. Greg and his family tour a possible future house, which has a big kitchen, a swimming pool, and more. The Heffleys like it and want to buy it. Greg's family attempts to sell their own house, which is successful when a family chooses to buy it on the condition that the hot tub is removed.

The day after Greg tries to explain his departure to Rowley, he sees that more work is already being done on his house and the Heffleys rush to get all their belongings out, after a mistake by Susan who had chosen the wrong date for the moving services to come. A worker hurries to remove the hot tub, lifting it with a crane, over the entire house. The hot tub swings and breaks part of the chimney, angering the wasps who are revealed to have been residing in the Heffley's chimney. Distracted by wasps, the crane driver pulls a lever that releases the hot tub which falls through the roof, creating a large hole in the house. The buyers now decide against moving in, canceling the Heffleys' move. Greg admits that he was not ready to move, glad to remain Rowley's best friend.

Wrecking Ball's author and illustrator, Jeff Kinney, decided on the book's theme while doing renovations to his own house. He realized that he had not yet written a book about Greg moving and considered the idea a good fit for the series. Wrecking Ball's title and cover were revealed on May 14, 2019, on Twitter by Kinney.

To promote the book, Kinney hosted a book tour called The Wrecking Ball Show, as a follow-up to the previous book promotion, The Meltdown Show. It lasted for 33 days across multiple countries: Italy, Germany, France, Greece, Bulgaria, Spain, and Portugal. The show's activities were decided live through spinning a wheel; activities included a dancing competition, a tower-building contest with foam blocks, and a trivia challenge.

Kinney used systematic inventive thinking to come up with jokes for the book. He elaborated that "[it] helps me generate ideas without having to rely on memories. [...] In it, problem-solving is based on templates. If you can use those templates to harness your creativity, then you can solve problems more quickly than you could another way." Kinney described moments from the book in which a kitchen remodel leads to a larger construction project and a hot tub is lifted over the house as based on true experiences. He concluded by describing Wrecking Ball as his "best-written book."

On the subject of the high amount of illustrations in the novel, Kinney stated that the Diary of a Wimpy Kid series is closer to being "long-form comics" rather than a graphic novel." He described the latest Diary of a Wimpy Kid books as requiring many illustrations due to being more "cinematic," then criticized the earlier books for being "sparse and minimalistic."

Kinney has stated that the theme of the book is "Greg letting go of his childhood home." He found that the best way to open the book would be to have Greg clean out his closet and try to sell objects at a yard sale, reflecting him "letting go of his childhood possessions." While discussing his overseas book tour, Kinney wrote that he sees the series as "a mirror." He explains that the books are popular worldwide because "childhood is universal" and children around the world all "deal with the same kinds of things."

In its first week, Wrecking Ball sold slightly less than 200,000 copies. As of February 9, 2020, it has sold over 650,000 copies.

Wrecking Ball received generally positive reviews from critics. Kirkus Reviews commented that "Readers can still rely on this series to bring laughs." Carrie R. Wheadon from Common Sense Media gave the book four out of five stars and praised it for having positive messages.