The short answer is no. Sites that collect reviews rely on collecting a consensus of many individual reviewers, and not a simple quantity of reviews. If someone was so motivated, they could post an unlimited number of one-star reviews that could sink your star rating, and only those curious enough would dig in and discover it was the work of one malicious person with a mission.

By permitting one Google review per Google user account, star ratings are more reliable as they represent a breadth of people who have used your services. A potential customer can expect the star rating reflects the experiences of customers over time and, due to Google’s diligence, they are not the result of gaming the system.

See our article Veracity and Transparency in Reviews to peek into the mind of that potential customer when looking at star ratings.

So what can be done? The bottom line is once a Google review is posted, it can only be edited/updated or deleted. If you want to look at a Google review you’ve posted, go to the business’s page for whom you’ve left a review, click on the reviews, and then edit your review in the list. Your review with have an edit button next to it.

If you want to see all of the reviews you’ve posted (i.e., posted using your Google account), go to Google Maps and click on the “hamburger” menu in the upper-left. Click on “Your contributions”, then click on the reviews tab. From there you can edit or add a photo to your review. To delete the review, click on the 3 dots next to the review in question.

Since you can’t leave another Google review, consider improving your existing Google review. If you want to promote a business you are loyal to, write a new review to let the next person know they need to look no further, they’ve found the business they’re looking for.