https://en.wikipedia.org/wiki/San_Antonio_mayoral_election,_2017 Pol. Nirenberg assumed office on June 21, 2017. Ron Nirenberg is the Mayor of San Antonio in Texas. Ron Nirenberg, Mayor of San Antonio. During Friday night's briefing, Mayor Ron Nirenberg said young adults made up 25% of positive cases in Bexar County. Ad. Nirenberg won in the general runoff election on June 8, 2019.. 32,323 talking about this. Nirenberg's current term ends on June 16, 2021. Jim Greenwood, Mayor Ron Nirenberg's chief of staff, seen during an inauguration ceremony for members of San Antonio's new City Council on Wednesday, June 19, 2019. Ronald Adrian Nirenberg, known as Ron Nirenberg (born April 11, 1977), is an American politician who has been the mayor of San Antonio, Texas, the seventh largest city in the United States, since June 21, 2017.Though he is not officially a Democrat, as are nearly all big-city mayors, he holds a non-partisan position. 1 of 27 Incumbent San Antonio Mayor Ron Nirenberg and his wife, Erika Prosper, arrive for his runoff election night watch party at The Friendly Spot on … "We're in a period of very high community transmission," Nirenberg said. Nirenberg ran for re-election for Mayor of San Antonio in Texas.