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...


  • 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...


  • 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...


  • 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 -...


  • 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 Wiikwemkoong Full-time

    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...


  • 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...


  • Nepean, Ontario, ON, Canada Jack R Bowerman CPA Professional Corporation Remote Full-time

    **Overview** Languages English Education - Bachelor's degree **Experience** 5 years or more On site Work must be completed at the physical location. There is no option to work remotely. **Responsibilities** Tasks - Motivate staff - Open and distribute mail and other materials - Determine and establish office...


  • 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...


  • 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...


  • Toronto, Ontario, ON, Canada Isaac Operations Full-time $60,000 - $65,000 Contract

    **Who We Are.** While technically we’re an operational consultancy, we don’t like to call ourselves consultants. We’re a collection of engineers, innovators and creators who work with companies across industries to simplify the complex, realize untapped potential, and uncover opportunities. We know that our people are our superpower and loving your...


  • 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...