Aktris Terbaik (Screen Actors Guild Award)

Screen Actors Guild Award untuk Kinerja Luar Biasa oleh Aktor Perempuan dalam Peran Utama adalah penghargaan yang diberikan oleh Screen Actors Guild untuk menghormati pencapaian terbaik dalam film akting.

Catatan:
 "†" menunjukkan pemenang Academy Award untuk Aktris Terbaik.
 "‡" menunjukkan nominasi untuk Academy Award untuk Aktris Terbaik.

Superlatif

Pemenang dan nominasi

1990-an

2000-an 
{| class="wikitable" width="95%" cellpadding="5"
|-
! width="10%"|Tahun  
! width="30%"|Pemenang dan nominasi  
! width="30%"|Film
! width="30%"|Peran
|-
| rowspan="5" style="text-align:center;"| 2000 || style="background:#B0C4DE;" | Julia Roberts || style="background:#B0C4DE;" | Erin Brockovich || style="background:#B0C4DE;" | Erin Brockovich †
|-
|Joan Allen || The Contender || Laine Billings Hanson ‡
|-
|Juliette Binoche || Chocolat || Vianne Rocher ‡
|-
|Ellen Burstyn || Requiem for a Dream || Sara Goldfarb ‡
|-
|Laura Linney || You Can Count on Me || Samantha "Sammy" Prescott ‡
|-
| rowspan="5" style="text-align:center;"| 2001 || style="background:#B0C4DE;" | Halle Berry || style="background:#B0C4DE;" | Monster's Ball ||style="background:#B0C4DE;" |  Leticia Musgrove †
|-
|Jennifer Connelly || A Beautiful Mind || Alicia Nash
|-
|Judi Dench || Iris || Iris Murdoch ‡
|-
|Sissy Spacek || In the Bedroom || Ruth Fowler ‡
|-
|Renée Zellweger || Bridget Jones's Diary || Bridget Jones ‡
|-
| rowspan="5" style="text-align:center;"| 2002 || style="background:#B0C4DE;" | Renée Zellweger || style="background:#B0C4DE;" | Chicago ||style="background:#B0C4DE;" |  Roxie Hart ‡
|-
|Salma Hayek || Frida || Frida Kahlo ‡
|-
|Nicole Kidman || The Hours || Virginia Woolf †
|-
|Diane Lane || Unfaithful || Connie Sumner ‡
|-
|Julianne Moore || Far from Heaven || Cathy Whitaker ‡
|-
| rowspan="5" style="text-align:center;"| 2003 || style="background:#B0C4DE;" | Charlize Theron ||style="background:#B0C4DE;" |  Monster ||style="background:#B0C4DE;" |  Aileen Wuornos †
|-
|Patricia Clarkson || The Station Agent || Olivia Harris
|-
|Diane Keaton || Something's Gotta Give || Erica Barry ‡
|-
|Naomi Watts || 21 Grams || Cristina Peck ‡
|-
|Evan Rachel Wood || thirteen || Tracy Louise Freeland
|-
| rowspan="5" style="text-align:center;"| 2004 || style="background:#B0C4DE;" | Hilary Swank || style="background:#B0C4DE;" |Million Dollar Baby || style="background:#B0C4DE;" |Maggie Fitzgerald †
|-
|Annette Bening || Being Julia || Julia Lambert ‡
|-
|Catalina Sandino Moreno || Maria Full of Grace || María Álvarez ‡
|-
|Imelda Staunton || Vera Drake || Vera Drake ‡
|-
|Kate Winslet || Eternal Sunshine of the Spotless Mind || Clementine Kruczynski ‡
|-
| rowspan="5" style="text-align:center;"| 2005 || style="background:#B0C4DE;" | Reese Witherspoon || style="background:#B0C4DE;" |Walk the Line || style="background:#B0C4DE;" |June Carter †
|-
|Judi Dench || Mrs. Henderson Presents || Laura Henderson ‡
|-
|Felicity Huffman || Transamerica || Stanley Schupak/Sabrina "Bree" Osbourne ‡
|-
|Charlize Theron || North Country || Josey Aimes ‡
|-
|Ziyi Zhang || Memoirs of a Geisha || Chiyo Sakamoto/Sayuri Nitta
|-
| rowspan="5" style="text-align:center;"| 2006 || style="background:#B0C4DE;" | Helen Mirren || style="background:#B0C4DE;" |The Queen || style="background:#B0C4DE;" |Queen Elizabeth II †
|-
|Penélope Cruz || To Return (Volver) || Raimunda ‡
|-
|Judi Dench || Notes on a Scandal || Barbara Covett ‡
|-
|Meryl Streep || The Devil Wears Prada || Miranda Priestly ‡
|-
|Kate Winslet || Little Children || Sarah Pierce ‡
|-
| rowspan="5" style="text-align:center;"| 2007 || style="background:#B0C4DE;" | Julie Christie || style="background:#B0C4DE;" |Away From Her || style="background:#B0C4DE;" |Fiona Anderson ‡
|-
|Cate Blanchett || Elizabeth: The Golden Age || Ratu Elizabeth I ‡
|-
|Marion Cotillard || La Vie en Rose|| Edith Piaf †
|-
|Angelina Jolie || A Mighty Heart || Mariane Pearl
|-
|Ellen Page || Juno || Juno MacGuff ‡
|-
| rowspan="5" style="text-align:center;"| 2008 || style="background:#B0C4DE;" | Meryl Streep || style="background:#B0C4DE;" | Doubt || style="background:#B0C4DE;" | Aloysius Beauvier ‡
|-
|Anne Hathaway || Rachel Getting Married || Kym ‡
|-
|Angelina Jolie || Changeling || Christine Collins ‡
|-
|Melissa Leo || Frozen River || Ray Eddy ‡
|-
|Kate Winslet || Revolutionary Road || April Wheeler
|-
| rowspan="5" style="text-align:center;"| 2009 || style="background:#B0C4DE;" | Sandra Bullock || style="background:#B0C4DE;" | The Blind Side || style="background:#B0C4DE;" | Leigh Anne Tuohy †
|-
|Helen Mirren || The Last Station || Sophia Tolstaya ‡
|-
|Carey Mulligan || An Education || Jenny Miller ‡
|-
|Gabourey Sidibe || Precious || Claireece "Precious" Jones ‡
|-
|Meryl Streep || Julie & Julia || Julia Child ‡
|}

 2010-an 

 Trivia 
Hanya pada lima kesempatan selama 15 tahun terakhir melakukan pemenang SAG Award untuk Aktris Utama Terbaik tidak memenangkan Academy Award untuk Aktris Terbaik.
Hal ini terjadi di:
 1994: Foster (Nell) lost to Lange (Blue Sky),
 1999: Bening (American Beauty) lost to Swank (Boys Don't Cry),
 2002: Zellweger (Chicago) lost to Kidman (The Hours)
 2007: Christie (Away From Her) lost to Cotillard (La Vie en Rose).
 2008: Streep (Doubt) lost to Winslet (The Reader)

Hanya sekali memiliki pemenang Academy Award untuk Aktris Terbaik tidak dinominasikan untuk Penghargaan SAG untuk Aktris Utama Terbaik. Pada tahun 2008, Kate Winslet memenangkan Oscar untuk penampilannya dalam "The Reader". Namun, dia memenangkan Penghargaan SAG untuk Aktris Pendukung Terbaik untuk perannya.

 Banyak nominasi 

2 nominasi
 Joan Allen (Nixon, The Contender)
 Cate Blanchett (Elizabeth, Elizabeth: The Golden Age)
 Angelina Jolie (A Mighty Heart, Changeling)
 Diane Keaton (Marvin's Room, Something's Gotta Give)
 Nicole Kidman (The Hours, Rabbit Hole)
 Helen Mirren (The Queen, The Last Station)
 Julianne Moore (The End of the Affair, Far from Heaven)
 Susan Sarandon (The Client, Dead Man Walking)
 Charlize Theron (Monster, North Country)
 Renée Zellweger (Bridget Jones's Diary, Chicago)

3 Nominasi
 Annette Bening (American Beauty, Being Julia, The Kids Are All Right)
 Hilary Swank (Boys Don't Cry, Million Dollar Baby, Conviction)

4 nominasi
 Judi Dench (Mrs. Brown, Iris, Mrs. Henderson Presents, Notes on a Scandal)
 Kate Winslet (Titanic, Eternal Sunshine of the Spotless Mind, Little Children, Revolutionary Road)

8 nominasi
 Meryl Streep (The River Wild, The Bridges of Madison County, One True Thing, Music of the Heart, The Devil Wears Prada, Doubt, Julie & Julia, The Iron Lady'')

Pranala luar 
 SAG Awards official site

Aktris Pemeran Utama
Penghargaan film untuk aktris utama