If you're looking for anime similar to K-On!, you might like these titles. All recommendations are made by Anime-Planet users like you!
Tomoya Okazaki is a third-year high school student who is generally bored with life and doesn't take his studies, future, or anything else seriously. One day, however, he meets a lonely-looking girl in the school courtyard, Nagisa Furukawa. She explains to him the source of her loneliness: she had missed a lot of the previous school year and thus is repeating her third year; everybody that she knew has already graduated, and she is lonely. Tomoya is rather indifferent at first, but decides that he has nothing better to do and spends increasingly more time helping Nagisa restore the school drama club. As his relationship with Nagisa grows, Tomoya begins to open up to various other people around the school as well...
Although K-On! stays away from love stories, both of these series are slow moving, school based stories that have forming a club as a strong motivator in the series (at least for some of each of them).
Although the story and plotline is rather different the humour in both of these have a simular after taste. Both of them can be watched several times without getting bored.
Self-professed lover of all things small and cute, Souta Takanashi finds himself dragooned into working at the Wagnaria family restaurant by the diminutive and vivacious Poplar Taneshima. Though the pay is reasonable and the clientele polite, the high school student is often at his wits' end when dealing with the quirky staff. If the indifferent and street-tough manager, katana-carrying floor chief, and terminally weak Poplar weren't enough, Souta frequently fears for his life, as every encounter with the violently androphobic Inami ends in injury. How long can he survive before the combined stress and harm do him in?
Each of these series have a rather similar feel, similar art work, and some similar comedy thrown in them. There are some parellels in the types of characters they have and they both experiment with different types of moe and a mixture of different characters thrown all together in a similar environment.
The comedy and stlye are very similar. Both are reletively slow paced, slice of life animes and contain a generous dollop of moe. If you like one, the other is worth watching.
"If I don't have to do it, I won't. If I do have to do it, make it quick," is the basic principle by which energy conservationist Houtarou Oreki lives. But after his sister convinces him to join the Classics Club, Houtarou's life is turned upside down when he meets Chitanda, a perpetually-inquisitive girl who challenges the boy's easygoing existence. Intrigued by the slightest hint of a mystery afoot, Chitanda doesn't hesitate to pester the reluctant yet highly analytical Houtarou into satisfying her curiosity at every turn, no matter how small the problem. Alongside fellow members Satoshi and Ibara, the group tackles cases ranging from a self-locking classroom door, a strangely-popular library book, and even the shadowy history of the very club to which they belong!
The art style is somewhat similar to each other and Chitanda Eru from Hyouka has the same attitude as Hirasawa Yui from K-On! :>
Both feature a similar concept of clubs and slice of life, while Hyoka is mystery K-ON! is about music and...tea? Charachter costumization is very similar and some charachters resemble each other in funny ways. If you love Moe that is reason enough to watch other one...
Wakana Sakai was involved in music, but gave it up one day. Konatsu Miyamoto loves singing and can't be torn from it. Sawa Okita would do anything for her closest friends. They laugh, they fight, they worry, they love... Through their very ordinary lives, little by little the girls learn to move forward. Sometimes they feel as if they can't go on alone, but as long as they have their friends, they believe they'll make it someday. Wakana, Konatsu, Sawa, and the music they make in their ensemble weave a tiny but dazzling story of the power of music.
Both are about friends in a school band. Furthermore, both are absolutely gorgeous-looking with cute characters (even the boys, in Tari Tari, are adorable!) Tari Tari has more drama than the easy-going K-On! but they both go hand-in-hand for fans of Slice of Life anime about music and school kids.
So well, both are based around the idea of music and a music club. However K-on's light music club is a all girl club and Tari Tari's choir is a mix. Tari Tari and K-on are also both about restarting/creating new clubs. Both also have references to the previous choir/light music club. The final thing is that they have similar genres...School Club/Life, Slice of Life and Music! So if you liked one you should like the other.
Cocoa arrives in a new town in spring to start high school. She gets lost and pops into a coffee shop called "Rabbit House", which turns out to be where she will live. All the characters are so cute - tiny but cool Chino, soldierly Lize, gentle and Japanese Chiyo, sophisticated but down-to-earth Sharo. They are joined by Chino's class mates Maya and Megu, and a regular at the shop, Mr. Blue-Mountain Aoyama. Everything is so cute every day at Rabbit House!
Both K-On and Gochuumon center around a group of energetic, cute, and often very ditzy school girls. Each episode is filled with fluff, silliness, and so much moe that you'll most likely be rendered unconscious. K-On is more about music-related adventures while Gochuumon has a lot to do with cafes, but fans of the 'cute girls doing cute things' genre will most likely enjoy both titles.
Both show a group of school girls dealing with their daily lives and how the friends ban together to accomplish something. While K-on is more school/ club focused and Is the Order a Rabbit more home focused they both show the greatness of being friends and working through problems.