Exhibit 99.3

Consent OF WILLIAM I. CAMPBELL

As required by Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named as a Director Nominee in the Registration Statement on Form S-1 of Tenzing Acquisition Corp. (the “Company”), originally filed on July 20, 2018, and any and all amendments thereto, registering securities for issuance in the Company’s initial public offering.

Dated: August 6, 2018

/s/ William I. Campbell

William I. Campbell