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Grant O'Brien

Assistant Linebackers CoachatArizona State

Coaching since 2023

Grant O'Brien is the Assistant Linebackers Coach at Arizona State, coaching since 2023. Staff history at 3 schools, the head coaches he worked under and the players he coached.

Updated Nov 9, 2026Sources: school staff directories, TransferPortl coaching tenures, CFBD

Staff History by Season

3 stints
  1. 2026
    Arizona StateAssistant Linebackers CoachPosition groups: LB
  2. 2025
    NorthwesternAssistant Defensive Backs CoachPosition groups: DB
  3. 2023-2024
    PurdueSafetiesPosition groups: S

Coaching Tenure Timeline

1 stops
2026-present1 season
NorthwesternCurrent
DB

Head Coaches He Worked Under

3

Players He Coached

40
Grant O'Brien: Arizona State Assistant Linebackers Coach, Career History | TransferPortl