Administrative assistant jobs in Mississauga, ON and nearby (315 jobs)

Administrative assistant jobs within 25 km of Mississauga, ON, Canada. Nearby towns and cities are included. Distances are straight-line, not driving distances.

Hiring at a glance

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Open jobs
315
Employers
194

Advertised starting pay

Average starting payCAD / hour
$27.75Across 44 listings
Average starting payCAD / year
$53,858Across 34 listings

Employer-advertised starting pay, not employee salaries. Currencies and pay periods stay separate.

Where work happens

Remote
0%0 listings
Hybrid
24%76 listings
On-site
76%239 listings

Employers hiring include University Health Network (24), Quantum Management Services Ltd. (12), Doane Grant Thornton LLP (6).

Sources & calculation notes

These figures describe the listings on this role page at the date shown, not the whole job market. Listings can change.

Employer-listed minimums from at least 10 listings per currency and pay period. These are advertised starting amounts, not employee salaries. Jobs without a minimum and unusual amounts are excluded.

Hybrid and on-site classifications may be inferred from descriptions. Check the original ad. How we count

About these jobs

Before you apply

Compare the office software, language skills and clerical experience requested in each ad. Job Bank lists secondary school and administrative training or previous clerical experience as typical requirements. Individual employers set their own criteria. Job Bank / Guichet-Emplois.

Guidance reviewed on September 16, 2026.

Based on the dated count above. Listings can change. How we count

Administrative assistant jobs in Mississauga, ON and nearby

Within 25 km

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  • Administrative Assistant

    Detroit Axle

    Mississauga, ON

    • Full-time

    Detroit Axle Canada is seeking a highly organized, detail-oriented, and proactive Administrative Assistant to support daily human resources and administrative operations at our Mississauga…

  • Operations Administrative Assistant

    Altohelix

    Toronto, ON

    • Contract

    This position requires attendance in the office five days per week

  • Administrative Assistant

    Halton Healthcare

    Oakville, ON

    • Contract

    Shift Schedule (Hours are subject to change based on operational needs): Mon-Fri – 7.5 hour day shifts

  • Administrative Assistant

    Halton Healthcare

    Oakville, ON

    • Contract

    Hours: Monday to Friday - 7.5 hour day shifts (Hours are subject to change based on operational needs) · Shift Schedule (Hours are subject to change based on operational needs): Mon-Fri – 7.5 hour day shifts

  • Administrative Assistant

    Roylo Partners

    Toronto, ON

    • Full-time

    A well-organized office makes it easier for everyone to do their best work. We’re looking for a dependable Administrative Assistant in Toronto, ON who enjoys keeping things in order,…

  • Senior Administrative Assistant

    MNP

    Toronto, ON

    • Full-time

    Make an impact with our Administration team as a Senior Administrative Assistant. This diverse team of professionals directly contributes to the success of the firm by supporting internal…

  • Administrative Assistant (23 months)

    Legal Aid Ontario

    Toronto, ON

    • Contract

    The successful incumbent will be responsible for supporting the Contact Centre Operations team as well as the Contact Centre in an administrative capacity.

  • Senior Administrative Assistant # 26-28630

    US Tech Solutions

    Toronto, ON

    • $27 to $32 CAD / hour
    • Contract

    Must have Executive Assistant experience · Must have experience supporting senior executives

  • Administrative Assistant

    The Jean Tweed Centre

    Toronto, ON

    • $30,459 to $35,633 CAD / year
    • Contract

    The Administrative Assistant provides general administrative and clerical support to the organization. The role involves coordinating departmental programs/activities, organizing meetings,…

  • Administrative Assistant, MS

    Ricoh USA, Inc.

    Mississauga, ON

    • Part-time

    The MS Administrative Assistant is responsible for providing exceptional support and service related to clerical and administrative duties through all mediums including correspondence,…

  • Administrative Assistant

    iA Financial Group

    Toronto, ON

    • Full-time

    …clients feel confident and secure about their future? As an Administrative Assistant, you will be responsible for providing essential administrative support and client service coordination…

  • Administrative Assistant, MS

    Ricoh

    Mississauga, ON

    • Part-time

    The MS Administrative Assistant is responsible for providing exceptional support and service related to clerical and administrative duties through all mediums including correspondence,…

  • Administrative Assistant

    Jean Tweed Centre

    Toronto, ON

    • $30,459 to $35,633 CAD / year
    • Contract

    The Administrative Assistant provides general administrative and clerical support to the organization. The role involves coordinating departmental programs/activities, organizing meetings,…

  • Administrative Assistant I

    University Health Network

    Toronto, ON

    • Part-time

    Provide administrative support to physicians, including preparing correspondence, reports, medical records, manuscripts, and other confidential documentation.

  • Administrative Assistant - Pharmacy

    Halton Healthcare

    Oakville, ON

    • Full-time

    Hours: Monday to Friday, 7.5 hour day shifts; (Hours are subject to change based on operational needs)

  • Admin Assistant to Clinical Manager, Family Birthing Centre

    St. Michael's Hospital

    Toronto, ON

    • Full-time

    Must have excellent attendance/punctuality record

  • Senior Administrative Assistant

    Quantum Management Services Ltd.

    Toronto, ON

    • $30 to $35 CAD / hour
    • Contract

    Our downtown client is seeking an experienced and highly organized Senior Administrative Assistant to join their team on an initial 6-month contract.

  • Health & Safety Administrative Assistant

    Onyx-Fire Protection Services Inc.

    Mississauga, ON

    • Full-time

    We are seeking a highly organized, dependable, and intellectually curious Administrative Assistant to support the National Safety Director and the broader Health & Safety team across the…

  • Senior Administrative Assistant

    Sapere

    Mississauga, ON

    • Full-time

    Role Description The Senior Administrative Assistant is a full-time, on-site role based in Mississauga, ON, providing high-level administrative support to executives and project teams. This…

  • BEC Bilingual Administrative Assistant

    EY

    Toronto, ON

    To qualify for the role, you must have

  • Reception Administrative Assistant

    Adecco

    Toronto, ON

    • $20 to $22 CAD / hour
    • Temporary

    Receptionist / Administrative Assistant – temporary

  • Administrative Assistant

    Peak Associates Limited

    Toronto, ON

    • $50,000 to $55,000 CAD / year
    • Full-time

    Must possess the ability to effectively communicate across all levels of management within the company as well as outside the organization

  • administrative assistant

    eDecree

    Toronto, ON

    • Full-time
  • Administrative Assistant

    MEGALIFE INC.

    Oakville, ON

    • Full-time

    Schedule: 3 days per week, daytime hours · Work Schedule: 3 days per week, during regular business hours

  • Senior Administrative Assistant

    Richardson Wealth Ltd

    Toronto, ON

    We are seeking a highly organized, proactive, and adaptable Senior Administrative Assistant to provide executive-level support to two senior leaders. This is an exciting opportunity for…

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