Ronny Hallin

{{short description|American actress (born 1938)}}

{{BLP sources|date=July 2016}}

{{Use mdy dates|date=December 2017}}

{{Infobox person

| image =

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| birth_name = {{birth date and age|1938|01|02}}

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| occupation = Producer, actress

| years_active = 1974–present

| spouse = Larry Hallin (divorced)

| parents = Anthony W. Marshall (father)

| relatives = {{ubl|Garry Marshall (brother)|Penny Marshall (sister)|Tracy Reiner (niece)|Scott Marshall (nephew)}}

| children = 3

}}

Ronny Hallin (born January 2, 1938){{Cite web|url=https://www.ibdb.com/broadway-cast-staff/ronny-hallin-508431|title=Ronny Hallin|work=Internet Broadway Database|access-date=January 12, 2025}} is an American television producer and actress. She is best known for her work on the television shows Happy Days, Mork & Mindy, and Step by Step.