When do we first hear the name "Anakin"?

Question

I recently watched the Original Star Wars Trilogy and I don't remember the name "Anakin" being said that much.

However Wookieepedia states:

Annikin Starkiller was the proposed name for the lead character in the what would become Episode IV and appeared in the rough draft. (...) He became the source of Luke's father's name, Anakin

_{Annikin Starkiller - Behind the scenes}

If the above is true and the name really originated back in early drafts of Ep. IV then I am surprised if we really don't hear the name a lot more often. When do we first hear the name "Anakin" in the Original Unaltered Trilogy?

Answer 1

The first in-canon mention of Vader's true name (within the original unimproved trilogy) is in RotJ, during the scene where Luke speaks with the Force-ghost of Kenobi.

LUKE: You told me Vader betrayed and murdered my father.

BEN: You father was seduced by the dark side of the Force. He ceased to be Anakin Skywalker and became Darth Vader. When that happened, the good man who was your father was destroyed. So what I have told you was true... from a certain point of view.

That being said, there's absolutely no indication that Luke doesn't already know this name and it would be very odd if he hadn't known it from childhood.

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You may be fooled into thinking that there was an earlier reference in ESB...

Emperor: We have a new enemy. The young Rebel who destroyed the Death Star. I have no doubt this boy is the offspring of Anakin Skywalker

... however this was retconned into the Special Edition (the original wording was "...son of Skywalker")

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For completeness, I should mention that the name itself appears in one of the very earliest draft scripts for the movie "The Star Wars", written some 4 years before A New Hope was ever filmed, so clearly Lucas always knew what Vader's real name was, even if the rest of us didn't:

"A harsh gale blows across the bleak grey surface of the Fourth Moon. The leaden sky presses down on a lone figure, ANNIKIN STARKILLER"

Answer 2

One could argue that Ben Kenobi, in his hut in Episode 4 says "Ani was a good friend"

In the 'real world' - Sir Alec was likely saying "and he was a good friend" - but, since we have precedent for Anakin being nicknamed "Ani" as early as Episode 1, the ambiguous diction, as well as 'correct' viewing order may lead future viewers to clearly hear Ben Kenobi say "Ani"