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One Membership. A Whole Structural Science Ecosystem

The ACA brings together researchers, educators, and practitioners across all structural science methods and application areas—from small molecules to macromolecules, powder and materials science to cryo-EM and data science.Unlike meetings or societies centered on a single technique or discipline, the ACA is intentionally broad, interdisciplinary, and integrative.

Membership in the American Crystallographic Association gives you access to more than a single discipline or technique—it connects you to the entire structural science community.

Become Part of the Structure

As an ACA member, you become part of a society that intentionally brings together researchers, educators, and practitioners working across all structural science methods and application areas—from small-molecule and chemical crystallography to macromolecular and structural biology, from powder diffraction and materials science to cryo-EM, computation, and data science.

What this means for you as a member:

  • Broader scientific perspective: Learn how structural science tools are applied across fields, helping you expand your expertise, adapt to new techniques, and stay relevant in a rapidly evolving landscape.
  • Connections that go beyond your specialty: Build relationships with scientists you might not encounter in a technique-specific society—opening doors to new collaborations, career opportunities, and ideas.
  • Meetings that work across boundaries: ACA meetings are designed to mix communities through shared sessions, workshops, and networking—so you gain exposure to new approaches without leaving your core field behind.
  • A stronger professional network at every career stage: Whether you’re a student, early-career scientist, or established leader, ACA membership connects you to mentors, collaborators, and peers across academia, industry, and national laboratories.
  • Expanded Network Through Society Memberships & Industry Connections: Extend your reach beyond ACA through our partnerships with peer societies and industry, opening doors to collaborative research, joint programs and workshops, and connections across academia, government, and industry.
  • A single home for interdisciplinary structural science: Instead of maintaining multiple memberships to stay connected across techniques, ACA offers a unified professional home that reflects how structural science is practiced today.
The ACA’s cross-community structure doesn’t just support interdisciplinary science—it makes it accessible, personal, and member-driven. By bringing diverse crystallographers together under one society, the ACA helps members grow, collaborate, and contribute to the future of structural science.

 

Member Benefits

The American Crystallographic Association connects the full crystallographic community in one place. By joining the ACA, you gain access to a broad network, shared resources, and opportunities that span methods, materials, and career stages, including:

 

Quarterly Issues of the ACA Newsletter: RefleXions featuring community news, highlights, and opportunities

  
 

A complimentary subscription to Physics Today

  
 

Receive advanced information and reduced fees for the ACA annual meeting and activities

  
 

Access to ACA Travel Awards which support attendance to the ACA annual meeting

  
 

Opportunities for professional recognition through ACA awards at all career stages, including early-career honors and the ACA Fellows Program

  
 

Access to the members-only ACA online directory, making it easy to connect with colleagues

  
 

Access to outreach opportunities and support, helping members engage broader communities and advance the field

  

 

Membership Levels 2026

Joining the ACA means becoming part of a diverse, international community of researchers, educators, and practitioners. The membership options below are structured to support individuals at every career stage, ensuring broad access to ACA programs, opportunities, and connections.

Regular (US)Regular (CA)RetiredPostDocGraduate/Undergraduate
$145 USD $110 USD $50 USD $50 USD $30 USD