administration assistant jobs in Ontario

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10,000 administration assistant job listings in Canada. Find daily updated positions from leading job boards.


  • Northwestern Ontario, ON, Canada Anishinabek Employment & Training Services Full-time $45,000 - $55,000 Contract

    The Ontario First Nations Technical Services Corporation (OFNTSC) is a nonprofit organization that provides technical advisory services, training, and capacity development to First Nations communities in Ontario.By offering a wide range of specialized services and expertise, OFNTSC helps to enhance the quality of life, promote self-sufficiency, and foster...


  • Northwestern Ontario, ON, Canada North Star Air Full-time

    About North Star Air At North Star Air, we connect people, goods, and communities across the North. We are committed to delivering safe, reliable, and affordable air transportation while supporting the unique needs of the people we serve. People are at the heart of everything we do. Position Summary The Office Administrator is responsible for coordinating...


  • Southwestern Ontario, ON, Canada CGC Canaccord Genuity Corp. Full-time $50,000 - $70,000 Contract

    Who we are:Canaccord Genuity (CG) is a leading independent, full-service financial services firm with a strong presence across wealth management and capital markets. We are built on long-term client relationships, entrepreneurial thinking, and a commitment to delivering tailored solutions for individual, institutional, and corporate clients. With a...


  • Northeastern Ontario, ON, Canada Wiikwemkoong Full-time $59,000 - $72,000 Contract

    Nakiiwin Azheyaaksin Employment Opportunity Administrative AssistantWiikwemkoong Child and Family Services is seeking qualified individuals to fill the position of Administrative Assistant. Wiikwemkoong Unceded Territory (WUT) Child and Family Services oversees and advocates for child and family matters by following the principals and ethics of...


  • Southwestern Ontario, ON, Canada Canaccord Genuity Corp. Full-time $50,000 - $70,000 Contract

    Who we are:Canaccord Genuity (CG) is a leading independent, full-service financial services firm with a strong presence across wealth management and capital markets. We are built on long-term client relationships, entrepreneurial thinking, and a commitment to delivering tailored solutions for individual, institutional, and corporate clients. With a...


  • Ontario, Canada CMHA - Concord Full-time

    Job Description Job DescriptionWhy work for CMHA York Region? We deliver quality mental health and addictions services that promote recovery and health, and end stigma.Our Values:Responsive to the needs of our clients, their families, and our communities Respectful in how we meet the needs of our clients and staff in each interaction Committed to delivering...


  • Southwestern Ontario, ON, Canada Waterloo International Full-time $62,000 - $77,000 Contract

    Administrative Assistant### Administrative AssistantApply: Waterloo, Ontario, Canada: Full time: Posted Today: 2026-03385At the University of Waterloo, we create and promote a culture where everyone can reach their full potential. As an employee, you get support & opportunities that empower you to advance your career. Explore how we can bring big...


  • Northwestern Ontario, ON, Canada Englobe Corp. Full-time $41,000 - $54,000 Contract

    Your missionYou will play an important role in a dynamic and passionate team, collaborating on a variety of projects of all sizes and scopes in the environment, renewable energies, hydroelectricity, transportation, materials, buildings and climate change markets. Boldness, innovation and collaboration are an integral part of our daily operations.Englobe -...


  • Ottawa, Ontario, Canada Desjardins Full-time

    As an administrative assistant, you help carry out administrative activities for your sector. You provide administrative and secretarial support to a director or manager reporting to a vice-president. You also provide administrative support to other members of your unit as needed. You help coordinate, plan and prioritize your unit’s management activities....


  • Eastern Ontario, ON, Canada RTX Full-time $44,000 - $80,000 Contract

    Location: CA-ON-RENFREW-114 ~ 1 Innovation Dr ~ INNOVATION PositionCountry: CanadaAt Raytheon Canada, we are committed to both our customers and employees. Our division provides Mission Support, servicing the defence, security and aerospace sectors with a broad range of high technology products and services. You will be part of a valuable team that allows...


  • Northeastern Ontario, ON, Canada Cochrane, Ontario Full-time $45,000 - $54,000 Contract

    ADMINISTRATIVE ASSISTANT Full-time Position in Cochrane As a member of the Clerical team, the Administrative Assistant will provide administrative and clerical support services to the Agency and its programs. Your primary responsibilities will be to provide clerical support through data entry functions, formatting documents, forms and reports, schedule,...


  • Southwestern Ontario, ON, Canada University of Waterloo Full-time $62,000 - $77,000 Contract

    About UsAt the University of Waterloo, we create and promote a culture where everyone can reach their full potential. As an employee, you get support & opportunities that empower you to advance your career. Explore how we can bring big ideas to life, together. The University is a welcoming workplace for those of all abilities, interests, and expertise. As...


  • Northwestern Ontario, ON, Canada Attorney General | Procureur général Full-time $42,000 - $56,000 Contract

    Join us in our mission to uphold justice and serve the publicBecome a Legal Administrative Assistant with the Ministry of the Attorney General's Criminal Law Division and play a crucial role in the justice system. Your efforts will support criminal prosecutions and ensure the smooth operation of court activities, directly impacting the lives of...


  • Northwestern Ontario, ON, Canada Doane Grant Thornton LLP Full-time $43,000 - $53,000 Contract

    Who we are You know those big cities that still feel like small towns? Where everyone’s friendly and helps each other out? That’s like Doane Grant Thornton. Except here we’re all professionals and there isn’t a mayor or a general store. What we’re trying to say is that we’re a large and growing professional services firm that still feels like a...


  • Northwestern Ontario, ON, Canada Environment, Conservation and Parks | Environnement, Protection de la nature et Parcs Full-time $39,000 - $45,000 Contract

    Apply By: Friday, November 13, 2026 11:59 pm EST $28.14 - $32.82 Per hour**Indicates the salary listed as per the OPSEU Collective Agreement. Join us in our mission to uphold justice and serve the public Become a Legal Administrative Assistant with the Ministry of the Attorney General's Criminal Law Division and play a crucial role in the justice system....


  • Central Ontario, ON, Canada Owen Sound Full-time

    The Town of Parry Sound, nestled amidst the breathtaking 30,000 islands of Georgian Bay, is a vibrant community committed to exceptional quality of life and public service. We are seeking a dedicated Records and Administrative Assistant to join our Administration Department. This vital role ensures the seamless flow of information, supports key municipal...


  • Central Ontario, ON, Canada Youth Unlimited YFC Southwestern Ontario Full-time $38,000 - $47,000 Contract

    Come Grow With Us!If you are passionate about doing your best work, making a difference, and having fun doing it, apply to one of our positions today!About UsWe want to see people inspired to do meaningful work. Our mission is simple - to see young people living fully in Christ. We are committed to helping youth develop holistically by offering programs and...


  • Mississauga, Ontario, Canada Peel Regional Police Full-time

    OverviewAre you an ambitious and highly motivated individual with experience in office and executive administration with excellent organization and communication skills? Are you looking to make the next step in your career? If so, apply below and join Peel Regional Police – one of Canada’s most progressive and innovative police services!As an...


  • Richmond Hill, Ontario, Canada RBC Dominion Securities Full-time $35,000 - $47,000 Contract

    Job Description What is the opportunity? RBC Dominion Securities is Canada’s leading full-service investment and wealth management firm. We are committed to helping our clients build financial success through a personalized approach that draws on the full resources of RBC Wealth Management. By providing ongoing, exceptional service and support to our...


  • North Bay, Ontario, Canada BGIS Full-time $47,118 - $58,897 Contract

    Summary JOB DESCRIPTION The Administrative Assistant I is responsible for a range of administrative duties including, answering calls, document management, servicing office equipment, conference room bookings and travel bookings. Key Duties & Responsibilities • Carry out the day-to-day execution of clerical duties to ensure BGIS is provided with...