The DVD boxset for season three was released by Sony Pictures Home Entertainment in Region 1 on November 23, 2004, twelve years after it had completed broadcast on television.

[11] Tom Cherones was the main director for this season; however, some of the episodes were directed by David Steinberg, Joshua White, and Jason Alexander.

[12] The show features Jerry Seinfeld as himself, Jason Alexander as George Costanza, Julia Louis-Dreyfus as Elaine Benes, and Michael Richards as Kramer.

[13] Due to Julia Louis-Dreyfus's off-screen pregnancy, her character had to spend the latter half of this season hiding her belly behind furniture and laundry baskets.

During stays, Seinfeld would put the couch cushions on the floor and sleep on them there to avoid the uncomfortable mattress.

[4] Elaine's story in "The Letter" was inspired by Larry David's experience attending an Angels – Yankees game in Anaheim, California.

David could be seen wearing the hat on the front page of the Los Angeles Times sports section the following day.

[5] The season premiere, "The Note", is the only episode (other than the original pilot) with a different version of the theme song, which included female back-up singers harmonizing over the iconic slap-bass tune.

The singers were added by composer Jonathan Wolff at the request of Jerry Seinfeld, who wanted to add "a little sparkle" to the music, suggesting the addition of some scat lyrics.

However, they had neglected to inform NBC and Castle Rock of the change, and when the season premiere aired, they were surprised and unimpressed, and requested that they return to the original style.

The website's critics consensus reads, "Seinfeld comes fully into its own as a divine comedy of petty grievances in a third season that mines wicked wit from the painfully awkward.

Elaine Pope and Larry Charles won "Primetime Emmy Award for Outstanding Writing in a Comedy Series" for "The Fix-Up".

Janet Ashikaga also won for "Outstanding Individual Achievement in Editing for a Series", for the episode "The Subway."

[20] David Steinberg was nominated for a Directors Guild of America Award for "Outstanding Directorial Achievement in Comedy Series" for "The Tape".

At her own insistence, Elaine sleeps on a sofa bed with a bar that sticks up through the mattress and hurts her back.