Past Presidents
| 1976 | Robert Grossman - Rotocast Plastics Products |
| 1976-1977 | Weldon (Red) Smith - Solar Plastics |
| 1977-1978 | George Kraemer - Kracor |
| 1978-1979 | Sherman McKinniss - Rotational Molding, Inc. |
| 1979-1980 | Larry Snyder - Snyder Industries, Inc. |
| 1980-1981 | Patrick K. Long - Formed Plastics, Inc. |
| 1981-1982 | H. Bryan Carter - Bonar Rosedale |
| 1982-1983 | Robert Dunne - Dunne Plastic Co. |
| 1983-1984 | Chuck Carlsen - Solar Plastics |
| 1984-1985 | Rush B. Smith - Plastech International, Inc. |
| 1985-1986 | Ravi Mehra - Nalge Company |
| 1986-1987 | Fred Butterfield - Bonar Plastics, Inc. Ravi Mehra - Nalge Company |
| 1987-1988 | Douglas S. Stuart - Bonar Plastics Inc. |
| 1988-1989 | Patrick K. Long - Formed Plastics, Inc. |
| 1989-1990 | G. Hughes Abell - Poly Processing Company |
| 1990-1991 | Chuck Carlsen - Solar Plastics |
| 1991-1993 | Gary E. Reep - Ashland Plastics Inc. |
| 1993-1994 | David C. Mulligan - Roto Plastics Corporation |
| 1994-1995 | James Braeunig - Hedstrom Corporation |
| 1995-1996 | William M. Blaiklock - Bonar Plastics Inc. |
| 1996-1997 | Carl Johnson - Chase Industries, Inc., Durus Div. |
| 1997-1998 | Thomas M. Niland - The Niland Company |
| 1998-1999 | Patrick K. Long - Formed Plastics, Inc. |
| 1999-2000 | Marilyn Wade - Rochester Rotational Molding, Inc. |
| 2000-2001 | Carl Dobrzeniecki - The Molding Company |
| 2001-2002 | James B. Leitz - Gregstrom Corp. |
| 2002-2003 | David C. Mulligan - Roto Plastics Corporation |
| 2003-2004 | Daven J. Claerbout - Dutchland Plastics Corporation |
| 2004-2005 | Joe Strzegowski - Hardigg Industries, Inc. |
| 2005-2006 | Mike Dorsey - Meese Orbitron Dunn |
| 2006-2008 | Corey Claussen - Custom Roto-Mold, Inc. |
| 2008-2010 | Daven J. Claerbout - Dutchland Plastics |
| 2010-2012 | Dave Smith - Rotational Molding Technology, Inc. |
| 2012-2013 | Bill Spenceley - Flexahopper Plastics, Inc. |
| 2013-2014 | Rick Carlsen - Solar Plastics, Inc. |
| 2015 | Corey Claussen - Custom Roto-Mold, Inc. |
| 2016-2017 | Conchita Miranda, Miráplastek, S.A. de C.V. |
| 2017-2019 | Dru Laws, Seljan |
| 2020-2021 | Rick Carlsen, Solar Plastics |
| 2021-2023 | Matt Bushman, Plasticraft |