The Disneyland Resort has a wide variety of rides. The ones that are inside are nice since they keep you out of the rain or the summer heat. These are all of the indoor rides at Disneyland. Some have lines that are outdoors or partially outdoors though.
Haunted Mansion

The Haunted Mansion’s ride queue is outside, but the entire ride is inside. You board your doom buggy and go through several scenes of this haunted mansion that has 999 ghosts inside of it.
It’s A Small World

It’s A Small World is a Fantasyland ride that is iconic. The ride queue is outdoors as well as where you board your boat for the ride. You are outside sailing to and from the building, but you’re inside for a long time while seeing all the scenes of this ride.
Pirates of the Caribbean

Most of the Pirates of the Caribbean line is outdoors, but the last little bit is indoors and the entire ride is indoors. It’s one of the longest rides at Disneyland with a ride time of 16 minutes.
Space Mountain

Space Mountain is a dark roller coaster that is entirely indoors. Some of the line for this ride is outdoors, but it’s mostly covered. It’s a great thrill ride and one of the fastest at Disneyland with a top speed of 35 mph.
Star Wars: Rise of the Resistance

Rise of the Resistance has an outdoor queue, but the ride is indoors. It’s a very cool trackless Star Wars ride and it’s the most expensive ride at Disneyland costing them $500 million to build. See the 10 most expensive Disneyland rides here.
Peter Pan’s Flight

Peter Pan’s Flight is such a classic ride in Fantasyland in Disneyland. The ride queue is covered outdoors, but the whole ride is indoors.
Snow White’s Enchanted Wish

Snow White’s Enchanted Wish is another indoor Fantasyland ride. It’s really cute and tells the story of Snow White.
Pinocchio’s Daring Journey

Pinocchio’s Daring Journey is also a Fantasyland ride that is indoors. It’s a nice break from rain if you’re there on a rainy day. See this list of things to do at Disneyland when it’s raining.
Indiana Jones Adventure

Indiana Jones Adventure is a wild thrill ride in Adventureland. The ride queue is partially outdoors and partially indoors. The whole ride is indoors though.
Millennium Falcon: Smuggler’s Run

Millennium Falcon: Smuggler’s Run is another indoor attraction in Star Wars: Galaxy’s Edge. It’s a simulation ride.
Buzz Lightyear Astro Blasters

Buzz Lightyear Astro Blasters in entirely indoors. This fun Toy Story themed ride is located in Tomorrowland and is a great way to beat the heat on a hot summer day.
Mickey & Minnie’s Runaway Railway

Mickey & Minnie’s Runaway Railway is a really cute and fun ride in Toontown that is full of amazing details. The whole ride queue and ride are indoors.
Roger Rabbit’s Car Toon Spin

Roger Rabbit’s Car Toon Spin is another indoor ride in Toontown in Disneyland with an indoor queue.
Star Tours

Star Tours is a Star Wars themed ride in Tomorrowland. It’s great for Star Wars lovers, but some people do tend to get sick on it due to the simulation.
The Many Adventures of Winnie the Pooh

The Many Adventures of Winnie the Pooh is an indoor ride, except for where you board the ride. It’s a very cute ride that has a really unique track. It’s definitely underrated and deserves more credit than it gets. Check out this list of underrated Disneyland rides here.
Monster’s, Inc. Mike & Sulley to the Rescue

Monster’s, Inc. Mike & Sulley to the Rescue is entirely indoors, but the ride queue is partially indoors and partially outdoors. This ride is really fun if you love the Monsters, Inc. movie.
Guardians of the Galaxy – Mission: BREAKOUT!

Guardian’s of the Galaxy – Mission: BREAKOUT is a crazy thrill ride with drops that make your stomach turn. It’s indoors and is such a fun, lively experience.
The Little Mermaid ~ Ariel’s Undersea Adventure

The Little Mermaid ~ Ariel’s Undersea Adventure is located in California Adventure park. The line for the ride is mostly outside, but really well covered. The ride is completely inside though.
Web Slingers: A Spider-Man Adventure

Web Slinger’s: A Spider-Man Adventure is an indoor ride where you pretend to sling webs and get points.
Soarin’ Around the World

Soarin’ Around the World is another indoor ride in California Adventure. It’s a classic ride that is so fun. It’s great for when you want to be indoors.
Toy Story Midway Mania!

Toy Story Midway Mania is an indoor ride where you aim at targets and earn points. The downside of this ride is that it can have long wait times, and you wait outside.