The core Seinfeld cast refers to the four leads whose characters anchor the series from 1989–1998.

Main Seinfeld Cast

  • Jerry Seinfeld – Plays a fictionalized version of Jerry Seinfeld , a New York stand‑up comedian whose apartment is the central hub of the show.
  • Julia Louis-Dreyfus – Plays Elaine Benes , Jerry’s ex-girlfriend and close friend, known for her sharp wit and disastrous dating life.
  • Jason Alexander – Plays George Costanza , Jerry’s best friend, a neurotic schemer constantly unhappy with his job, relationships, and life.
  • Michael Richards – Plays Cosmo Kramer , Jerry’s eccentric neighbor, famous for his wild entrances, odd business ideas, and physical comedy.

Other Frequently Seen Characters

  • Wayne Knight – Plays Newman , the often-antagonistic postal worker and Jerry’s nemesis.
  • Ruth Cohen – Plays Ruthie Cohen , a recurring background character who appears in many Monk’s Café scenes.

Mini HTML Table (Main Cast)

html

<table>
  <thead>
    <tr>
      <th>Actor</th>
      <th>Character</th>
      <th>Role Type</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Jerry Seinfeld</td>
      <td>Jerry Seinfeld</td>
      <td>Main cast</td>
    </tr>
    <tr>
      <td>Julia Louis-Dreyfus</td>
      <td>Elaine Benes</td>
      <td>Main cast</td>
    </tr>
    <tr>
      <td>Jason Alexander</td>
      <td>George Costanza</td>
      <td>Main cast</td>
    </tr>
    <tr>
      <td>Michael Richards</td>
      <td>Cosmo Kramer</td>
      <td>Main cast</td>
    </tr>
  </tbody>
</table>

Information gathered from public forums or data available on the internet and portrayed here.