If you have been asking when the last episode of Alvin and the Chipmunks aired, the answer depends on which series you mean.
The 2015 CGI revival, Alvinnn!!! and the Chipmunks, is the version most people refer to today. Its final episode aired much later than the original 1980s show.
The 2015 series ended with its fifth season, and the final episode aired in 2024. That’s important because some databases group specials, production years, or regional airings differently, which can make the ending look confusing.

The Final Episode And Air Date

Most fans look for the ending from the Nickelodeon-era revival, not the classic run.
The final episodes appear in season 5, with some guides separating out specials and tracking the broader production timeline.
What The Last Episode Was Called
The final season of Alvinnn!!! and the Chipmunks is season 5. Episode guides for the series track the ending within that run.
Some listings group related specials separately, which is why the apparent “last episode” can shift depending on the database.
When It Aired
The last episode aired in 2024, closing out the revival after a long run on Nickelodeon.
Episode databases such as TVmaze’s season 5 guide and IMDb’s season 5 listing both show that the final season carried the series to its end.
Why Some Sources List It Differently
Some sources count specials alongside regular episodes, while others only count the standard season order.
That is why you may see different “last episode” references, especially if the listing includes production years, regional broadcasts, or bonus material.
Which Series Actually Ended

The Chipmunks have appeared in more than one TV series, so the ending you mean depends on which era you grew up with.
The original franchise and the 2015 reboot are separate runs, and each has its own season count and production history.
The Difference Between The Original Franchise And The 2015 Reboot
The 2015 series, Alvinnn!!! and the Chipmunks, updates the earlier animated show, according to Wikipedia’s episode list.
The classic 1980s series had its own long run, while the reboot brought a newer CGI style and a different broadcast era.
How Many Seasons The CGI Series Had
The reboot ran for five seasons. Some episode trackers note specials or alternate release groupings, which can make the total look a little different at first glance.
The Role Of Bagdasarian Productions And Technicolor Animation Productions
Bagdasarian Productions and Technicolor Animation Productions produced the revival.
They helped define the show’s modern look and feel, making the 2015 series distinct from earlier Chipmunks TV versions.
The Core Cast And Show Setup

The show follows the familiar trio, plus the Chipettes, Dave, and a school setting that keeps the stories moving.
The humor comes from family friction, classroom trouble, and recurring authority figures who keep catching Alvin in the middle of chaos.
Alvin, Simon, And Theodore
Alvin causes trouble, Simon is the brains, and Theodore is the sweet, sensitive one.
That balance creates the classic Chipmunk dynamic, where sibling conflict and teamwork drive most episodes.
Brittany, Jeanette, And Eleanor
The Chipettes—Brittany, Jeanette, and Eleanor—bring their own energy and rivalries to the story.
Their presence adds another layer to the friendships, competitions, and music-focused plots.
Dave, School Life, And Recurring Authority Figures
Dave keeps the group grounded, while school stories create a steady stream of problems and jokes.
Characters like principal interest, missing miss smith, and the temp shape episodes such as back to school, where everyday rules collide with Chipmunk mischief.
Notable Episodes Fans Often Remember

Fans remember episodes that mix big personality moments, school drama, and music-driven chaos.
The titles show how wide the show’s range can be, from one-off gags to stories that push the characters into bigger emotional or comic beats.
Early Standouts From The First Season
Early favorites like talking teddy, a is for alien, sister act, don juan theodoro, albrittina, clowning around, my sister the weirdo, turf war, and mystic mountain helped define the reboot’s style.
These episodes set up the show’s fast pace, playful conflicts, and sibling comedy.
Popular Mid-Series Stories
As the series settled in, episodes such as driving dave crazy, mister manners, saving simon, reality or not, what a gem, family spirit, the app, simon for president, to serve and protect, kickin’ it old school, bully for you, good luck mr. whiskers, candy confessions, mojo missing, safety third, tree house, and bromance gave fans the mix of heart and silliness that stands out.
Later Episodes That Lead Into The Ending Era
Later titles like carts and crafts, going green, tattle tail, super heroes, kiss conspiracy, house guest, theozilla, doggone it, mutiny, let them eat crumbs, who ghosts there, warbie, i will survive, mancave, dog days, dragon dad, wax dave, the new kid, simon the superb, the sub, brittany the body snatcher, agent smith, baby whisperer, munk man, ride along, for whom the bell tolls, ihear, switch witch, double trouble, liar liar, suck toad, secret admirer, un-send!, the orb, the music box, special delivery, monster madness, super girls, held back, keeping up with the humphries, we’re the chipmunks, save the dance, parent trap, knights, snake charmer, blabber mouth, taken, davey boy, and tour bus highlight how the series leaned into personality-driven stories.
If you followed toward the end, these episodes kept the show’s tone consistent up to the final season.