Connor Neil Kazuki O'Toole is an Australian professional footballer who plays as a left-back for Sydney Olympic in the NPL NSW.

[4] O'Toole signed for A-League club Brisbane Roar in May 2016 on a two-year professional deal along with fellow young defender Kye Rowles.

[2] O'Toole made his professional debut for the Roar on 26 April 2017, in an AFC Champions League group stage game against Muangthong United, coming on as a second-half substitute for Luke DeVere in a 3–0 loss.

He started and played a full A-League match for the first time the following week, impressing in a 3–1 win over Melbourne City FC at home.

[11] O'Toole was first called up to the Australian under-20 side in October 2015, making two appearances in the successful 2016 AFC U-19 Championship qualification tournament.