I've decided to update this page to not only include upcoming activities for each calendar year, but to also include Clark Lindsey's retrospectives for each year as well. I'll include those between the calendar years in big bold links to his retrospective pages.

2020 

• Nov 16-18: AIAA ASCEND, Las Vegas, NV.  Submission deadline is 17 March 2020.
• Oct 21-25:  71st IAF International Astronautical Congress (IAC) 2020, Dubai, UAE. Abstracts Due: 28 Feb 2020. Papers Due 28 Sept 2020.
• Oct 17-19: 2020 Space Generation Congress (SGC), Washington, DC, USA. 
• June 22-25: 2020 National Space & Missile Materials Symposium (NSMMS) & the Commercial and Government Responsive Access to Space Technology Exchange (CRASTE), Bethesda, MD
• Mar 2-5:  Next-Generation Suborbital Researchers Conference (NSRC-2020), Broomfield, CO. 
• Jan 29-30: The Commercial Space Transportation Conference, hosted by the Commercial Spaceflight Federation, Ronald Reagan Building, Washington, DC. 
• Jan 7-11: AIAA SciTech 2020, Orlando, FL. 

2019

• Dec 12-13:  High Speed Aerospace Transportation Workshop, Midland, TX.
• Dec TBC:  7th Manfred Lachs Conference on Space Law, Montreal, Canada 
• 20-21 Nov: SpaceCom 2019, Houston, TX.  
• Nov 7-9: SpaceVision 2019, Tempe, AZ.
• Nov 12-14 : 17th Reinventing Space Conference, Belfast, Ireland. 
• Oct 9-10: 2019 Int’l Symposium for Personal & Commercial Spaceflight, Las Cruces, NM.
• Oct 21-25:  70th IAF International Astronautical Congress (IAC) 2019, Washington, DC, USA. Abstracts Due: 28 Feb 2019. Papers Due XX Sept 2019.
• Oct 17-18: 2nd Annual University of Southern California's (USC) Southern California Commercial Space Initiative (SCCSI) Workshop, Los Angeles, CA.
• Oct 16-19: 2019 Space Generation Congress (SGC), Washington, DC, USA. 
• July 16-18: Space 2.0, San Jose, CA.   
• June 26-27: Space Enterprise Summit, sponsored by the U.S. Departments of State and Commerce, Washington, D.C.. 
• June TBC: SFF NewSpace Conference, TBD.
• June TBC: 2019 National Space & Missile Materials Symposium (NSMMS) & the Commercial and Government Responsive Access to Space Technology Exchange (CRASTE), Madison, WI. 
• June 6-9: National Space Society International Space Development Conference (ISDC 2019), Sheraton Pentagon City Hotel, Arlington, VA.
• 16 May: American Enterprise Institute Seminar on the Economics and Business of Space, Washington DC,
• Apr 8-11: Space Foundation's 35th Space Symposium, Colorado Springs, CO, USA.
• Mar TBC: MIT New Space Age Conference, Cambridge, MA.
• Feb 26-27: Space Traffic Management 2019 @ UT Austin, a collaboration of ERAU and UTAustin, Austin, Texas. Abstracts due: 8 Oct 2018. 
• Feb 20-22: Lunar ISRU 2019, Universities Space Research Association (USRA) Headquarters in Columbia, MD. Abstracts due 14 Dec 2018. Registration through 8 Feb 2019.
• Feb 12-13: 22nd Annual FAA Commercial Space Transportation Conference, Ronald Reagan Building, Washington, DC.
• Jan 13-17: 2019 TRB 98th Annual Meeting, Washington, D.C. 
• Jan 7-11: AIAA SciTech 2019, Manchester Grand Hyatt, San Diego, CA.

2018

• Dec 6-7: High Speed Aerospace Transportation workshop, Midland Air and Spaceport, Midland, TX. 
• Nov 30 - Dec 1:  6th Manfred Lachs Conference on Space Law, Montreal, Canada 
• Nov 1-3: SpaceVision 2018, San Diego, CA.
• Oct 30-Nov 1: 16th Reinventing Space Conference (RISpace), London, UK. 
• Oct TBD: FAA Commercial Space Transportation Advisory Committee (COMSTAC) Meeting, Washington, DC.
• Oct 10-11: 2018 Int’l Symposium for Personal & Commercial Spaceflight, Las Cruces, NM.
• Oct 9: COE CST Annual Technical Meeting 8 (ATM8), ... 
• Oct 1-5:  69th IAF International Astronautical Congress (IAC) 2018, Bremen, Germany. Abstracts Due: 28 Feb 2018. Papers Due XX Sept 2018.
• Sept 27-29: 2018 Space Generation Congress (SGC), Bremen, Germany. 
• Sept 17-19: AIAA SPACE and Astronautics Forum and Exposition (AIAA SPACE 2018), Orlando, FL.
• June 26-28: SFF NewSpace Conference, Seattle, WA.
• June 25-28: 2018 National Space & Missile Materials Symposium (NSMMS) & the Commercial and Government Responsive Access to Space Technology Exchange (CRASTE), Madison, WI. 
• May 24-27 : National Space Society International Space Development Conference (ISDC 2018), Los Angeles, CA.
• May :  5th Manfred Lachs Conference on Space Law, Montreal, Canada
• Apr 16-19 : Space Foundation's 34th Space Symposium, Colorado Springs, CO, USA.
• April 3-5: Space 2.0, San Jose, CA.  
• Mar 11: MIT New Space Age Conference, Cambridge, MA.
• Feb 7-8: 21st Annual FAA Commercial Space Transportation Conference, Ronald Reagan Building, Washington, DC.
• Jan 15-19: 4th ERAU Space Traffic Management Conference 2018. Abstracts due: 15 Sept 2017. Earlybird registration ends: 25 Oct 2017. Papers due: 30 Nov 2017. Presentations due: 30 Dec 2017.  
• Jan 8-12: AIAA SciTech 2018, Gaylord Palms, Kissimmee, FL, aiaa-scitech.org.
• Jan 6-12: 2018 TRB 97th Annual Meeting, Washington, D.C.

2017

• Dec 18-20:  Next-Generation Suborbital Researchers Conference (NSRC-2017), Broomfield, CO.
• Nov 16-19: SpaceVision 2017, University of Central Florida, Cape Canaveral, Florida!
• Nov 9: A New Space Age: The business case to dream. Museum of Flight, Seattle, WA. 
• Oct 24-26: Reinventing Space Conference (RISpace), Strathclyde University Technology and Innovation Centre, Glasgow, Scotland. Abstracts due 2 June. 
• Oct TBD: FAA Commercial Space Transportation Advisory Committee (COMSTAC) Meeting, Washington, DC.
• Oct 18-20: 9th IAASS Conference, Toulouse, France. 
• Oct 11-12: 2017 Int’l Symposium for Personal & Commercial Spaceflight,, Las Cruces, NM.
• Oct 10: COE CST Annual Technical Meeting 7 (ATM7), Las Cruces, NM. 
• Sept 23-29:  68th IAF International Astronautical Congress (IAC) 2017, Adelaide, Australia. Abstracts Due 28 Feb. Papers Due XX Sept.
• Sept 20-23: Space Generation Congress (SGC), Adelaide, Australia. 
• Sept 12-14: AIAA SPACE and Astronautics Forum and Exposition (AIAA SPACE 2017). Orlando, FL Venue: Hyatt Regency Orlando 
• June 27-29: SFF NewSpace Conference, San Francisco, CA.
• June 26-29: 2017 National Space & Missile Materials Symposium (NSMMS) & the Commercial and Government Responsive Access to Space Technology Exchange (CRASTE), Indian Wells, CA. Call for abstracts coming soon. Abstracts due 6 Jan 2017.
• May 25-29: National Space Society International Space Development Conference (ISDC 2017), St. Louis, MO.
• May 5-6:  5th Manfred Lachs Conference on Space Law, Montreal, Canada
• April 25-27: Space 2.0, San Jose, CA. 
• April TBD: FAA Commercial Space Transportation Advisory Committee (COMSTAC) Meeting, Washington, DC.
• April TBD: Space Access '17 Conference, Phoenix, AZ. CANCELLED
• Apr 3-6: Space Foundation's 33rd Space Symposium, Colorado Springs, CO., USA.
• March 6-8: Disrupt Space Summit 2017, Bremen, Germany.
• Feb 7-8: 20th Annual FAA Commercial Space Transportation Conference, Ronald Reagan Center, Washington, DC.
• Jan 9-13: AIAA SciTech 2017, Gaylord Texan, Grapevine, TX.
• Jan 8-12: 2017 TRB 96th Annual Meeting, Washington, D.C.

2016

• Nov 16-18: ERAU Space Traffic Management Conference 2016. Abstracts due: 15 Sept. Papers due 21 Oct. Presentations due 10 Nov.
• Nov 15-17: SpaceCom, Houston, TX.  
• Nov 3-6: SEDS SpaceVision 2016 Conference, Purdue, IN. 
• Oct 25-26: FAA COMSTAC Fall Meeting, Washington, DC.
• Oct 24-27: 14th Reinventing Space Conference, London, UK. Call for Papers closes 17 June.
• Oct 12-13:  2016 Int’l Symposium for Personal & Commercial Spaceflight, Las Cruces, NM.
• Oct 11:  Center of Excellence for Commercial Space Transportation (COE CST) Sixth Annual Technical Meeting (ATM6), Las Cruces, NM.
• Sept 26-30: 67th IAF International Astronautical Congress (IAC) 2016, Guadalajara, Mexico. Abstracts Due 29 Feb. Papers Due TBD.
• Sept 13-16: AIAA Space 2016, Long Beach, CA. Abstracts Due: 25 February 2016. Manuscript Due: 18 August 2016
• Aug 16-17: Space Foundation Space Technology & Investment Forum, San Francisco, CA.
• July 25-27: AIAA Propulsion and Energy 2016, Salt Lake City, Utah
• June 28-30: Toulouse Space Show'16, Toulouse, France.
• June 21-23: Space Frontier Foundation NewSpace 2016 Conference, Seattle, WA.
• June 20-23: 2016 National Space & Missile Materials Symposium (NSMMS) & the Commercial and Government Responsive Access to Space Technology Exchange (CRASTE), Westin Westminster Hotel, Westminster, CO. 
• June 2-4: Next-Generation Suborbital Researchers Conference, Broomfield, CO
• June 2-3: Skolkovo Startup Village 2016, Moscow, Russia.
• May 27-28: 4th Manfred Lachs International Conference, McGill Institute of Air and Space Law, Montreal, Canada. Abstract deadline: 31 January 2016.
• May 25-27: European Business Angels Network (EBAN) 2016 Annual Congress, Porto, Portugal.
• May 18-22: National Space Society International Space Development Conference (ISDC 2016), San Juan, Puerto Rico.
• May 13-14: COE CST Emerging Space Industry Leaders Workshop (ESIL)-09, Washington, DC. 
• April 27-28: FAA COMSTAC Spring Meeting, Washington, DC.
• April 26-28: Space 2.0, Silicon Valley, CA. 
• Apr 11-14: Space Foundation's 32nd Space Symposium, Colorado Springs, CO., USA.
• April 7-9: Space Access '16 Conference, Phoenix, AZ. 
• April 01-02: COE CST Emerging Space Industry Leaders Workshop (ESIL)-08, Denver, CO. 
• March 22-24: IAF Spring Planning Meetings, Paris, France. 
• Feb 2-3: 19th Annual FAA Commercial Space Transportation Conference, National Housing Center, Washington, DC. (DATES TENTATIVE)
• Jan 10-14: Transportation Research Board (TRB) 95th Annual Meeting, Washington, D.C.
• Jan 4-8: AIAA SciTech 2016, Pasadena, CA.

2015

• 2015 Calendar of Commercial Space Events

2014

• 2014 Calendar of Commercial Space Events  

2013

• 2013 Calendar of Commercial Space Events

2012

• NewSpace 2012: A Log of the Ups and Downs of Entrepreneurial Spaceflight :
  A HobbySpace.com/RLVTransportNews.com special report by Clark Lindsey

• 2012 Calendar of Commercial Space Events

2011

• NewSpace 2011: A Log of the Ups and Downs of Entrepreneurial Spaceflight :
  A HobbySpace.com/RLVTransportNews.com special report by Clark Lindsey 

•   2011 Calendar of Commercial Space Events 

2010

• NewSpace 2010: A Log of the Ups and Downs in Entrepreneurial Spaceflight :
  A HobbySpace/RLVNews special report by Clark Lindsey

• 2010 Calendar of Commercial Space Events

2009

• NewSpace in 2009: The Ups and Downs in Entrepreneurial Spaceflight :
  A HobbySpace/RLVNews special report by Clark Lindsey

• 2009 Calendar of Commercial Space Events

2008

• "NewSpace in 2008: Ups and Downs in Entrepreneurial Spaceflight" :
  A HobbySpace.com Special Report by Clark Lindsey

• 2008 Calendar of Commercial Space Events

2007

• "NewSpace in 2007: Ups and Downs in Entrepreneurial Spaceflight" :
  A HobbySpace.com Special Report by Clark Lindsey