What does Mars mean?
Mars is an uncommon first name for men but a very popular surname for all people (#6850 out of 150436, Top 5%). (2000 U.S. Census)
Below is a charted comparison of the popularity of the boy name Mars and related names. Marcus (#158 a year ago), Martin (#262), Ares (#781), Marcel (#853) and Mariano are the prominent alternative forms of Mars (#unlisted). Usage of these boy names was at its highest during 1900-1909 (usage of 0.5062%) and is now significantly lower (usage 0.3892%, down 23.1%), with the forms Martin, Mariano and Marcel becoming less in vogue. Ares (#781) and Marcus (#158) are two of the more trendy boy names among these, and there is a rebound in baby name popularity for Marcus. (Top 1000 Birth Names Statistics, 2014)
Mars is pronounced similarly to Morse. Other suggested similar baby names are Lars, Mads, Maks, Mar, Mar-, Marc▼, March, Marco, Marek, Marik, Marius, Mark, Marko, Maro, Marq, Marr, Marsh, Mart, Marx, Marzo, Mats, Maurus, Mays and Moris. These names tend to be more commonly used than Mars.