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.


  • Ontario, Canada Waterloo International Full-time €61,955 - €77,444 Temporary

    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 ideas to...


  • Ontario, Canada Englobe Corp. Full-time €40,807 - €53,560 Temporary

    Your mission You 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...


  • Ontario, Canada University-of-Waterlo Full-time €61,955 - €77,444 Temporary

    At 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 part of...


  • Ontario, Canada Ontario First Nations Technical Services Corporation Full-time

    Administrative Assistant 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...


  • Ontario, Canada University of Waterloo Full-time €61,955 - €77,444 Temporary

    About Us At 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...


  • Ontario, Canada RTX Full-time €44,000 - €80,000 Temporary

    Location: CA-ON-RENFREW-114 ~ 1 Innovation Dr ~ INNOVATION Position Country: Canada At 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...


  • Ontario, Canada North Star Air Ltd. 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...


  • Southwestern Ontario, ON, Canada Waterloo International Full-time

    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...


  • 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 Englobe Corp. Full-time

    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 -...


  • Southwestern Ontario, ON, Canada University-of-Waterlo Full-time

    At 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 part of...


  • 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...


  • Northwestern Ontario, ON, Canada Ontario First Nations Technical Services Corporation Full-time

    Administrative Assistant 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...


  • Ontario, Canada Dilico Anishinabek Family Care Full-time €24 - €30 Temporary

    Why should YOU choose Dilico? Optional Flexible schedule to support work-life balance OMERS Pension plan available to all employees Competitive salaries Generous paid vacation time for Permanent employees Paid time off at Christmas above paid vacation time EFAP available to all employees and their families Benefit plan that includes dental,...


  • Ontario, Canada Dilico Anishinabek Family Care Full-time

    Become the backbone of the Child Welfare program with Dilico as an Administrative Assistant. Ensure accurate client files and support daily administrative duties in a meaningful role. Under the direction of a Child Welfare Manager, the Administrative Assistant facilitates program organization and timely completion of tasks. This position requires managing...


  • Ontario, Canada CFMWS Full-time

    WHO WE AREThe Canadian Forces Morale and Welfare Services’ (CFMWS) supports the Canadian Armed Forces members and their families wherever they are in the world through the provision of fitness, recreation and leisure activities, family and charitable support, retail as well as personal financial services. We offer our employees the opportunity to work with...


  • Ontario, Canada University of Waterloo Full-time €61,955 - €77,444 Temporary

    At 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 part of...


  • Ontario, Canada University of Waterloo Full-time €61,955 - €77,444 Temporary

    At 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. The University is a welcoming workplace for those of all abilities, interests, and expertise. Job Requisition ID: 2026-02904 Time Type: Full time Employee Group:...


  • Windsor, Ontario, ON, Canada The Salvation Army in Canada Full-time

    **Who We Are** For more than 130 years, The Salvation Army has served people in need in communities across Canada and Bermuda. Building on our roots as a world-wide Christian church, each year we help more than 2 million people, providing necessities such as food, clothing and shelter. In addition, we support people experiencing unemployment, addiction and...


  • Aurora, Ontario, ON, Canada Hunter Mercantile Full-time $60,000 - $70,000 Contract

    **Administrative Support Specialist — Wealth Management** 📍 Aurora, ON (York Region) | Full-Time, In-Office Our client, a boutique Wealth Management firm in Aurora, is seeking a dedicated Administrative Support Specialist to serve as the administrative heartbeat of their office. This position is built specifically for a true "career...