As always, we'll keep this first post updated with whatever potential nominees get mentioned in the thread below.
And please don't forget to specify whether the performance is leading or supporting.
Note: Films and names in blue are those with multiple mentions.
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Actress
The Babadook - Essie Davis
Belle - Gugu Mbatha-Raw
Blind Detective - Sammi Cheng
Comet - Emmy Rossum
Dear White People - Tessa Thompson
The Disappearance Of Eleanor Rigby - Jessica Chastain
The Fault in Our Stars - Shailene Woodley
Force Majeure - Lisa Loven Kongsli
Gloria - Pauline Garcia
Gone Girl - Rosamund Pike
Happy Christmas - Anna Kendrick
Happy Christmas - Melanie Lynskey
The Immigrant - Marion Cotillard
Into the Woods - Emily Blunt
The Last 5 Years - Anna Kendrick
Nymphomaniac - Charlotte Gainsbourg
Obvious Child - Jenny Slate
Only Lovers Left Alive - Tilda Swinton
Palo Alto - Emma Roberts
Predestination - Sarah Snook
The Skeleton Twins - Kristen Wiig
Still Alice - Julianne Moore
The Theory of Everything - Felicity Jones
Two Days, One Night - Marion Cotillard (this is my #2 pick behind Cotillard in The Immigrant)
Under the Skin - Scarlett Johansson
We Are the Best! - Mira Barkhammar
We Are the Best! - Mira Grosin
Wild- Reese Witherspoon
Supporting Actress
Bad Words - Kathryn Hahn
Bastards - Chiara Mastroianni
Bastards - Lola Créton
Birdman or (The Unexpected Virtue of Ignorance) - Andrea Riseborough
Birdman or (The Unexpected Virtue of Ignorance) - Emma Stone
Birdman or (The Unexpected Virtue of Ignorance) - Naomi Watts
Boyhood - Patricia Arquette
Boyhood - Lorelei Linklater
Boyhood - Patricia Arquette
The Double - Mia Wasikowska
Enemy - Sarah Gadon
Frank - Maggie Gyllenhaal
Gone Girl - Carrie Coon
Gone Girl - Kim Dickens
Ida - Agata Kulesza
The Imitation Game - Keira Knightley
Inherent Vice- Katherine Waterston
Interstellar - Mackenzie Foy
Into the Woods - Anna Kendrick
Into the Woods - Meryl Streep
Nightcrawler - Rene Russo
Night Moves - Dakota Fanning
Only Lovers Left Alive - Mia Wasikowska
Selma- Carmen Ejogo
Snowpiercer - Alison Pill
Snowpiercer - Tilda Swinton
22 Jump Street - Jillian Bell
We Are the Best! - Liv LeMoyne
Wild - Laura Dern
Winter Sleep - Demet Akbag
Winter Sleep - Melisa Sözen