jowilki

This plugin allows you to display thumbnails and links to yours (or anyones!) latest Pins from Pinterest in your sidebar. It is styled after Pinterest and offers a clean and modern look to show off your pins.
This widget is fully customizable, you can:
<ul>
<li>pull the latest pins from any Pinterest user</li>
<li>display only pins from specific boards</li>
<li>choose the number of pins to display</li>
<li>show or hide the image captions</li>
<li>display a “Follow me on Pinterest” button under your pins</li>
</ul>
Features:
<ul>
<li>Clean and Modern Look (like Pinterest)</li>
<li>Looks great on light and dark backgrounds</li>
<li>Captions scale and look nice with long or short text</li>
<li>Semantic HTML</li>
<li>Easy to Install: Simply add a Pinterest username and you’re good to go!</li>
</ul>
More to come when Pinterest opens their API! This project is maintained on github if you’d like to contribute : 
https://github.com/jowilki/pretty-pinterest-pins

Pretty Pinterest Pins

A plugin to show off images, captions, and links from your latest Pinterest activity.

mrsztuczkens

Rob W

redearthdesign

Alexandre Simard

If you’re looking for an easy way to pin images in your blog posts and pages, this plugin will help you with that. It highlights images and adds a “Pin it” button over them once the user hovers his mouse over an image. Once the user clicks the “Pin it” button, the plugin shows a pop-up window with the image and a description. Everything is ready for pinning, although the user can alter the description.
The plugin allows you to:
<ul>
<li>choose from where the pin description should be taken </li>
<li>choose which pictures shouldn’t show the “Pin it” button (using classes)</li>
<li>choose which pictures should show the “Pin it” button (all images, post images, images with certain class(es))</li>
<li>choose if you want to show the “Pin it” button on home page, single posts, single pages or category pages</li>
<li>disable showing the button on certain posts and pages</li>
<li>choose transparency level depending on your needs</li>
<li>use your own Pinterest button design</li>
</ul>
Once you activate the plugin, it’s ready to go with the default settings – button appears on all images within the body of your posts/pages that aren’t marked with “nopin” or “wp-smiley” classes.
Translators 
– Spanish (es_ES) – Andrew Kurtis <a href="http://www.webhostinghub.com/" rel="nofollow ugc">WebHostingHub</a>
If you want to learn more about the plugin, visit its website: https://highfiveplugins.com/jpibfi/jquery-pin-it-button-for-images-documentation/
(This plugin is not related to or endorsed by Pinterest or its affiliates)

jQuery Pin It Button for Images

This plugin is easy.  EASY. To use.  In less than 5 minutes you can declare which images on your site via a simple CSS selector string.  Anyone with some jQuery or CSS education will be able to master this in minutes.  I'll keep this tool handy on other projects.

Kudos!

Super easy and simple to use

Highlights images on hover and adds a Pinterest "Pin It" button over them for easy pinning.

Pretty Pinterest Pins vs jQuery Pin It Button for Images