You may find the need to Hide one Friend from another on Facebook, if you want to want to be Friends with two different individuals who do not agree with each other on anything.
However, the problem is that Facebook does not provide the option to hide a specific friend from another; while keeping your Friends List visible to both of them. Hence, let us go ahead and explore; if there are other ways of to hiding one Friend from another on Facebook.
Hide One Friend From Another on Facebook
While the default option in Facebook is to make your Friends List visible to public, it also provides the option to make your Friends List Private; which results in your Friends list being hidden from everyone; including these two friends that you are trying to hide from each other.
Another way of hiding one Friend from another on Facebook is by making your Friends list hidden to both these Friends, while showing it to others.
1. Make Your Friends List Private on Facebook
As mentioned above, you can make your Friends List private on Facebook; which totally prevents the possibility of these two Friends knowing who you are Friends with.
1. Login to your Facebook Account on a computer.
2. Once you are logged-in, click on your Name and then click on the Friends tab.

3. On the Friends page, click on the Pencil Icon > Edit Privacy.

4. In Edit Privacy section, click on the down arrow icon located at top-right corner of “Who can see your friends list” and select Only me option in the drop-down menu.

This will prevent everyone; including your two specific Friends from knowing who you are Friends with on Facebook.
2. Hide Friends List from Specific Individuals
Another way of hiding one Friend from another on Facebook is by sharing your Friends List with everyone, except the two individuals that you want to hide from each other.
1. Login to your Facebook Account on a computer.
2. Once you are logged-in, click on your Name and then click on the Friends tab.

3. On the Friends page, click on the Pencil Icon > Edit Privacy.

4. In Edit Privacy section, click on the down arrow icon located at top-right corner of “Who can see your friends list” and click on the Custom option in the drop-down menu.

5. On the next screen, type the Names of the two individuals that you want to hide from each other in Don’t share with section.

6. Click on Save Changes to save this setting in your Facebook Account.
After this, both these individuals won’t be able to see your Facebook Friends and this currently is the only way to hide one friend from another on Facebook.
Except for these two individuals, all your other Friends will be able to see all your Friends on Facebook.