phpawy

Using this plugin, you can embed Google Maps into any post. inserting Latitude, Longitude and Zoom level will show the location inside post using Google Maps.
<h3>Important Notice</h3>
This plugin utilizes Google Maps JS API. The coordinated you enter is sent to the API to show the corresponding location’s map.

Simple Google Maps

Simply allowing you to add Google Maps to your posts.

JavierMendezPWG

You can configure your locations into a page with shortcode [simplegmaps], you only must add a list of parameters, 
latitud (latitude), longitud (longitude), zoom, tipomapa (TypeMap), titulomarker (Title of the marker), alto (height of div), ancho (width of div).
Example: 
[simplegmaps latitud = “40.430224” longitud = “-2.416992″ zoom=”13″ alto=”300px” ancho=”300px” titulomarker = “Hola Mundo!”]
Visit me:
web: http://www.programacionwebgalicia.com/
blog: http://programacionwebgalicia.wordpress.com/
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twitter: https://twitter.com/PWGalicia

SimpleGMaps

Place locations into div using Google Maps V3

Simple Google Maps vs SimpleGMaps