List of Lost References

Pilot

 * Emma Swan drives a VW Beetle, as did John Locke.
 * Emma's last name "Swan" is a reference to Swan Station.
 * There is a Geronimo Jackson sticker on Emma's car.
 * Henry Mills gets off the train at Gate 4. It is also Room 4 Emma checks into at Granny's Bed & Breakfast. This is one of the Lost numbers.
 * There is a swan on the key Granny gives Emma.
 * Regina and Henry live at house number 108.
 * The time on the clocktower in Storybrooke is frozen at 8:15. It is a reference to Oceanic flight 815.
 * The clock unfroze at 8:15, chimed at 8:16. Then the next morning, Regina sees the clock at 8:23. 8, 15, 16 and 23 are all Lost numbers.
 * There is a close-up of Emma's eye after she wakes up from the car crash. This is a recurring theme from Lost such as when Jack's eye is focused upon after waking up from the plane crash.

The Thing You Love Most

 * There Is a painting of an island in Archie Hopper’s office that looks a bit like the Lost island, and a sketch that resembles the ‘Black Rock’ that brought Richard Alpert to the Island.

Snow Falls

 * Dr. Whale says to Mary Margaret, "Something about you wanting 15 kids?" (15 is one of the Lost numbers)

The Price of Gold

 * Thomas is the name of Cinderella's prince and the father of Claire's child on Lost.
 * Both Ashley and Claire's boyfriends leave them after they become pregnant.
 * Ruby’s Camaro bears a resemblance to the one belonging to Hurley’s dad.
 * Ashley's baby girl's name is Alexandra. On Lost, there is also an Alexandra.

That Still Small Voice

 * Ajax the dog look a lot like Vincent.
 * Apollo brand candy bars.

The Shepherd

 * Emma and Mary Margaret share glasses of MacCutcheon Scotch Whiskey. This brand was featured on Lost.
 * Alan Dale played Charles Widmore on Lost, and plays King George/Albert Spencer on Once Upon A Time.

The Heart is a Lonely Hunter

 * Graham's eye is focused upon.
 * In Henry’s room there is a yellow airplane hanging from his ceiling. It has a strong resemblance to the one that killed Boone.
 * The Evil Queen destroys Snow's letter and on Lost Anthony destroys Sawyer's letter.
 * Lana Parrilla, who plays the Evil Queen and Regina for Once Upon a Time also played Greta on Lost.
 * The Evil Queen's valut where she keeps the Huntsman's heart has 9 columns and 12 rows, which equals 108 total boxes, one of the Lost numbers again.
 * Sheriff Graham wakes up in the middle of the night because of a dream, which is actually a memory. He says to Regina, "It didn't feel like a dream. It felt like a memory." Similar wording is mirrored by Desmond, who says to Penny, "It wasn't a dream, Pen. It was a memory."

Desperate Souls

 * The dagger is an ancient dagger, just like the one used to kill Jacob.
 * Rumpelstiltskin’s son is nicknamed Bae. That is also the name of the doctor who delivered Sun and Jin’s baby.

True North

 * The stranger's license plate features 23, one of the Lost numbers.
 * Ava and Nicholas hide a stolen Apollo bar in Henry's bag.

7:15 A.M

 * Mary Margaret claims her class is making a volcano in school. On Lost, the class on the island made a volcano.
 * Mary Margaret is grabbing an Apollo bar off the store shelf when she bumps into Kathryn buying the pregnancy test.
 * Mary Margaret is reading The Mysterious Island by Jules Verne in Granny's Diner.
 * Damon Lindelof, one of the creators of Lost, voices the Storybrooke meteorologist.

Fruit of the Poisonous Tree

 * Sidney may be a reference to Sydney Australia.

Skin Deep

 * Belle is in an insane asylum, like Hurley and Libby.
 * Actress Emilie de Ravin plays Belle, but also played Claire on Lost.

What Happened to Frederick

 * August's cup at the watering hole looks like Richard Alpert's blue cup.
 * The vehicle Mary Margaret were in is similar to Jack's Bronco.
 * Wayne was Kate's father's name.

Dreamy

 * Astrid tells Leroy that the nuns only sold 42 candles last year, 42 is one of the numbers from Lost.
 * 'The Dwarves work in crews of eight. Eight is one of the numbers from Lost.
 * Leroy refers to everyone as "sister", which is similar to Desmond calling everyone "brother".

The Stranger

 * The airplane Pinnochio is startled by as it flies overhead has the Oceanic Airlines logo on it.
 * The Lost flight number 815 comes up again when August mentions that he woke up at 8:15 AM in Phuket, which is 8:15 PM in Storybrooke.
 * On Lost, Jack also lost himself in Phuket after his divorce.