Jock Shaw, president of Scottish Cycling said: “The Board are disappointed that Toni has tendered her resignation but we wish Toni every success for the future.”
A statement from Scottish Cycling said:
"The Board will be considering the options in the short and longer term to fill the vacancy at its meeting planned for 19 December."
Whight joined Sottish Cycling from the post of head of leisure services with a local authority in Dorset.
She has represented Great Britain five times at the World Triathlon Championships.
At the time of her appointment last year, she said:
"I have come to Scottish cycling at what I believe to be a very exciting time, a time when the organisation is rapidly evolving into something much bigger and better. My new job is to take the organisation forward and develop systems and processes that will make Scottish Cycling a cutting edge governing body.
"My first main task is to prepare a business plan that will cover everything the organisation is trying to achieve in the next four years; more specifically looking at improving services to members and volunteers, encouraging participation in our sport and developing excellence."