Gregory Alan Ballard (born November 20, 1954) is an American politician, author, and businessman who served as the 48th mayor of Indianapolis, Indiana.

Beginning in 2001, Ballard worked for Bayer in Indianapolis, before becoming self-employed as a leadership and management consultant.

[3] An October 19 campaign finance report showed that Peterson had raised $1.5 million since April and still had that much on hand to spend.

In his acceptance speech, Ballard told the audience he considers this campaign "the classic, if not the ultimate, example of grassroots politics.

"[7] Ballard won re-election to a second term, defeating former Deputy Mayor Melina Kennedy, 51%–47%.

[8][9] Ballard was sworn into office on Tuesday, January 1, 2008, at the Indiana War Memorial, in downtown Indianapolis.

The mayor's office anticipates spending more than $500 million on such projects in coming years, largely funded by proceeds from the pending sale of the city's water and sewer systems to Citizens Energy Group, a nonprofit trust, and stimulus money.

[11] On August 19, the City of Indianapolis announced it has received $13.8 million more than originally expected from a bond issue secured by the pending sale of its water and sewer utilities to Citizens Energy Group.

That would bring total proceeds from selling the utilities—before subtracting fees and other costs related to the sale—to $504.4 million, from $490.6 anticipated when the City-County Council approved the sale.

[12] In October 2008, Ballard announced the creation of the city's first Office of Sustainability and unveiled the SustainIndy initiative.

[14] On December 12, 2012, Ballard signed Executive Order #6, making Indianapolis the first major city in the United States to commit to the conversion of its entire municipal non-police fleet to electric or plug-in hybrid vehicles.

The mayor also outlined a plan to convert the entire city government vehicle fleet to post-oil technology by 2025.