The portal from Andlasia to New York – a reference to Who Framed Roger Rabbit, The Nightmare Before Christmas, Monsters Inc. and The Chronicles of Narnia (film series) .

The storybook opening of Enchanted – a tribute to the openings of Snow White and the Seven Dwarfs, Pinocchio (1940 film), Cinderella, The Sword in the Stone, Sleeping Beauty, and others.
Giselle's initial personality – based on multiple Disney Princesses; director Kevin Lima describes her as "about 80% Snow White, with some traits borrowed from Cinderella and Sleeping Beauty... although her spunkiness comes from Ariel of The Little Mermaid".

Queen Narissa's character – based on those of the Queen from Snow White and Maleficent from Sleeping Beauty She was also the stepmother of the prince making her a combination of the Queen, Maleficent and Cinderella's stepmother.
True love's kiss – a reference to the only way Snow White and Aurora could be awakened from the curses that were put upon them.

The troll's loincloth – consists of remnants of the Disney princesses' dresses, Snow White's rags, Belle's village dress, Aurora's peasant dress, & Cinderella's maid outfit. Also, his earrings are the shells from Ariel's bra.
Mary Ilene Caselotti, the name of the news reporter – a reference to Mary Costa (the voice of Aurora), Ilene Woods (the voice of Cinderella) and Adriana Caselotti (the voice of Snow White).

The final fight scene at the top of Woolworth Building – an homage to similar climaxes in Sleeping Beauty, The Little Mermaid, Beauty and the Beast, The Hunchback of Notre Dame (1996 film). As with those scenes, it is seen with a blue hue and is accompanied by thunder and lightning for dramatic effect.

As the villain attempts to throw the hero off the building, the villain falls to his or her own death.

Giselle's fall into New York – a reference to The Nightmare Before Christmas and Alice in Wonderland

Giselle's cottage – similar to the dwarfs' cottage.
Giselle's animal call – originated from the musical notes Snow White sings into the well.
Giselle holds up two blue diamonds to her eyes – just as Dopey does.
Prince Edward and Giselle riding off into the sunset at the end of "True Love's Kiss" – a tribute to the ending of Snow White and the Seven Dwarfs.
Narissa disguises herself as a hag – just as the Queen does. (Wloszczyna 2007a)
Magic Wishing Well – a reference to the wishing well that Snow White sings into during "I'm Wishing".
"True Love's Kiss", a song sung by Prince Edward and Giselle – similar to "I'm Wishing/One Song" and "Some Day My Prince Will Come".
"Happy Working Song" – a homage to "Whistle While You Work".
Giselle mistakes a little person in New York City for the dwarf Grumpy.
Prince Edward calls the television set "Magic Mirror" – a reference to the Queen's Magic Mirror.
Narissa's poisoned apples – a reference to the Queen's poisoned apple.

Churchill, Harline and Smith, the law firm Robert works at – a reference to the songwriters for Snow White and the Seven Dwarfs, Frank Churchill, Leigh Harline and Paul J. Smith.
The poisoned caramel apple shows the same skull-shaped appearance as the poisoned apple from the movie when it first came out of the brew before it turned red.
Cinderella
Specific references made to Cinderella include:

The carriage Giselle rides to the castle – based on Cinderella and Prince Charming's wedding coach.
The "Happy Working Song" sequence, in which Giselle scrubs the floor of Robert's apartment and her reflection is seen in each of the bubbles floating around the room – a tribute to the "Oh, Sing Sweet Nightingale" sequence in Cinderella.
Giselle uses Robert's curtains and Morgan's blanket to make her dresses – a reference to the dress that Cinderella's mice friends make for her, from things that her stepsisters weren't using.(Wloszczyna 2007c)
Robert and Giselle gaze into each other's eyes in their dance – just as Prince Charming and Cinderella did.
The poison apple's spell takes effect when the clock strikes midnight – a reference to the spell wearing off at midnight in Cinderella.
Giselle loses her slipper, which Prince Edward puts on Nancy's foot and happens to be the perfect fit – a tribute to the ending of Cinderella.
The Grand Duke, the hotel Edward stays at – a reference to a character in Cinderella.
The surname of Robert's girlfriend Nancy Tremaine – a reference to Cinderella's stepmother, Lady Tremaine Narissa was also Prince Edward's stepmother .
Sleeping Beauty
Specific references made to Sleeping Beauty include:

Edward's animated appearance was modeled on Prince Phillip's.
Narissa transforms into a dragon – just as Maleficent does at the end of Sleeping Beauty; neither villaness lives to become human again.
Giselle recreates the prince from her dream with her animal friends – a reference to the scene where Princess Aurora's forest friends use Prince Phillip's clothes to pretend to be the prince from her dreams.
The dance that Edward does with Nathaniel – a tribute to Prince Phillip and King Hubert's.
Robert and Morgan's last name is Philip – a reference to Prince Phillip.
Robert's secretary, Sam, is named after Prince Philip's horse, Samson.
Mary Poppins
Specific references made to Mary Poppins include:

Julie Andrews provides the voice narration – Andrews played the title role of Mary Poppins.
The Banks, the divorcing couple – a reference to the parents.
The birdseed woman from the bus (and later in the park) – a tribute to the birdseed woman seen during the song "Feed the Birds".
Broadway veteran Harvey Evans, the elderly yellow-jacketed man who dances during "That's How You Know" – previously danced as a chimney sweep in Mary Poppins.
When Prince Edward pops out of the manhole, it's a similar action to when Mary Poppins popped out of the chimney.
The Little Mermaid
Specific references made to The Little Mermaid include:

Jodi Benson plays Robert's secretary, Sam – Benson voiced Ariel in The Little Mermaid. (Adler 2007)
Giselle sings to her dream prince – just as Ariel does with the statue of Eric. (Quint 2007)
The Troll's earrings are made of the shells Ariel wears. (Wloszczyna 2007b)
As Giselle studies the fish tank at Robert's office, an instrumental version of "Part of Your World" is played in the background. (Wloszczyna 2007c)
"That's How You Know" – a homage to "Under the Sea" and "Kiss the Girl" through its calypso beat. (Wloszczyna 2007c)
When Giselle brushes her hair in the beginning of the animated part of the movie, she does it the same way as Ariel did in The Little Mermaid.
During "That's How You Know", Giselle and Robert are in a boat like Ariel and Eric were during "Kiss the Girl".
A stuffed plushie of a sheep dog is found on the couch of Roberts apartment, a reference to Eric's dog Max
When Prince Edward and Giselle are reunited in Roberts apartment he twirls her in the air, the same way Prince Eric twirls Ariel after King Triton turns her to human permanently
Giselle's second hand-made dress, which she wears during breakfast with Robert and Morgan, is a pink and white off-the-shoulder dress, resembling Ariel's dress in the dinner scene with Prince Eric.
Aside from Ariel, Giselle is the only other Disney girl to become a mother to Morgan, as Ariel was to Melody.
Beauty and the Beast
Specific references made to Beauty and the Beast include:

A bell jar with a rose is seen in Giselle's cottage – a reference to the one in Beauty and the Beast.
Giselle runs up a grassy hill with her arms outstretched during "That's How You Know" – a reference to a similar shot of Belle in Beauty and the Beast.
Nathaniel watches a soap opera that features the musical theme of Beauty and the Beast and actress Paige O'Hara portraying a woman named Angela – O'Hara provided the speaking and singing voice of Belle.
The set design of the soap opera scene – a reference to the bandaging scene in Beauty and the Beast.
The soap opera's characters: Angela, Jerry and Ogden – a reference to Angela Lansbury (the voice of Mrs. Potts), Jerry Orbach (the voice of Lumière) and David Ogden Stiers (the voice of Cogsworth).
The King's and Queen's ball – an homage to the ballroom scene in Beauty and the Beast, which also feature a couple dancing under a chandelier, to a song sung from the perspective of an observer (in Beauty and the Beast, it is the title song by Mrs. Potts; in Enchanted, it is "So Close" by Jon McLaughlin). The camera angles are also very similar to the scene it references.
Robert's costume at the ball – resembles the clothes that the Beast wore during the ballroom scene.
As Giselle lays dying in Robert's arms, he whispers, "Please don't leave me." Belle said the same thing to the Beast as he was dying.
As Giselle and Robert say their goodbyes, Prince Edward checks his reflection in his sword, a reference to Gaston during his attempt to propose to Belle.
During the song "That's How You Know" a woman is shown with a candelabra headdress, a reference to Lumière
At the end as the storybook closes, the shop is called Epstein's Books. A reference to Alvin Epstein who provided the voice of the Bookseller in the 1991 Disney film.
Other
References made to other Disney films and characters include:

Jodi Benson, who plays Robert's receptionist was the voice Ariel in "The Little Mermaid (1989 film)", as well as those of Tour Guide Barbie and other Barbie dolls in Toy Story 2 and Toy Story 3.
Judy Kuhn makes a cameo appearance as one of the residents in Robert's building – Kuhn provided the singing voice of Pocahontas. (King 2007)
The troll, while being flung into the next kingdom, does the Goofy holler, heard in many other Disney films and shorts – a reference to Goofy. (Empire 2007)
The bus driver's hair is shaped like the ears of Mickey Mouse. (Sciretta 2008)
Television clips watched by Prince Edward and Nathaniel in their hotel room – according to director Kevin Lima, "Everything on the television comes from a Disney film. Every image: Disney's Robin Hood; there's an image of Mortimer Snerd, a ventriloquist's dummy that comes from Fun and Fancy Free. There's a lot of dialogue that plays in the background that is all Disney referenced as well. There's a Spanish Mickey Mouse cartoon." (Ide 2007)
In addition, while channel surfing, a portion of the music from the Pink Elephant scene in Dumbo can be heard before switching back to the soap opera at Nathaniel's request.
During "That's How You Know", Giselle joins a stage production of "Rapunzel" in the outdoor theater – a reference to Disney's 2010 release of Tangled. (Wloszczyna 2007c)
Bella Notte, the Italian restaurant that Giselle, Robert and Morgan eat at – a tribute to the song from Lady and the Tramp. (Kit & Giardina 2007)
Giselle pulls Edward's sword from the ballroom floor – a reference to The Sword in the Stone. (Empire 2007)
Giselle's gradual transformation throughout the movie from cartoonish to "real woman" – a tribute to Pinocchio. (Butler 2007)
Giselle says that she made her dress by spinning silk into thread on her spinning wheel. This makes a reference from Rumpelstiltskin and Sleeping Beauty spinning wheels.
Near the end when Pip is doing a book-signing, you can see Pumba from The Lion King in line waiting for a hand stamp. Also outside the window is the crocodile from Peter Pan.

Giselle takes a sword and battles Narissa's dragon form on the roof, a tribute to Mulan fighting the villain on the palace roofs.
Giselle, Narrissa, and Edward have live action and animated forms – a reference to James and the Giant Peach when James climbs into the peach.

When Nathaniel comes up with his plan to try to stop Edward from finding Giselle by letting the troll chase him, he closes the locket with Narissa's picture the same way Professor Ratigan did in one scene of The Great Mouse Detective.

In the True Love's Kiss musical number, a frog falls into a sink full of soapy water and reappears with a soapy crown on its head, foreshadowing Disney's The Princess and the Frog movie.