"primary advisor" is correct and usable in written English.
You can use it when referring to a person or organization that is offering advice or guidance on a particular topic. For example, "My primary advisor was always available to answer any questions I had about my education."
William seems to have been somewhat eclipsed in ecclesiastical administration and appointments by Roger of Salisbury, Bishop of Salisbury, and King Henry's primary advisor.
Forget standing on principle, or even showing reasoned judgment, Jeb went so far as to say that his brother would be his primary advisor on foreign policy.
"The FEMA Administrator must continue to serve as the primary advisor to the President on all issues related to disasters and emergencies, and have the full authority granted to the position through the Stafford Act and the Post-Katrina Emergency Management Reform Act".
Our primary advisor, Jack Soap, brings twenty years of industry experience and networked relationships to accelerate market penetration of the product line.
They included an Afghani medical doctor who was a highly experienced researcher in mental health and fluent in all project languages except Tamil and who was our primary advisor (SW); and a Sri Lankan medical doctor fluent in Tamil.
Look for "Primary Advisor", and this will list not only who your advisor is, but also their office number, their office location on campus, and an icon to email them.
"Remember, Zeus Capital, who are the primary advisors behind this, were Manchester United's advisor when they floated and they went on to become properly invested in and a global brand.
Half of the affluent investors asked consider themselves to be their own primary financial advisor.
Choose one primary investment advisor.
Our primary cultural advisor had also noted that some participants with low levels of education may not be familiar with the mental health domain generally and be inclined to confuse psychiatric terminology with neurological conditions.
Although care was taken not to change the wording of questionnaire items, on the advice of our primary cultural advisor a series of elaborations were developed so that additional explanations could be provided for participants not understanding a particular item (more likely those with low levels of education and/or literacy) and for terms likely to be ambiguous.
