Gradient descent and queue layouts -- Graph drawing via gradient descent (GD)² -- Stochastic Gradient Descent Works Really Well for Stress Minimization -- The Local Queue Number of Graphs with Bounded Treewidth -- Parameterized Algorithms for Queue Layouts -- Lazy Queue Layouts of Posets -- Drawing tree-like graphs, visualisation, and special drawings of elementary graphs Improved Upper and Lower Bounds for LR Drawings of Binary Trees -- On the Edge-Length Ratio of 2-Trees -- HOTVis: Higher-Order Time-Aware Visualisation of Dynamic Graphs -- VAIM: Visual Analytics for Influence Maximization -- Odd wheels are not odd-distance graphs -- Polygons with Prescribed Angles in 2D and 3D -- Restricted drawings of special graph classes On Mixed Linear Layouts of Series-Parallel Graphs -- Schematic Representation of Large Biconnected Graphs -- Drawing Tree-Based Phylogenetic Networks with Minimum Number of Crossings -- A Tipping Point for the Planarity of Small and Medium Sized Graphs -- Orthogonality -- Characterization and a 2D Visualization of B0-VPG Cocomparability Graphs -- Planar L-Drawings of Bimodal Graphs -- Layered Drawing of Undirected Graphs with Generalized Port Constraints -- An Integer-Linear Program for Bend-Minimization in Ortho-Radial Drawings -- On Turn-Regular Orthogonal Representations -- Extending Partial Orthogonal Drawings -- Topological constraints -- Topological Drawings meet Classical Theorems from Convex Geometry -- Towards a characterization of stretchable aligned graphs -- Exploring the Design Space of Aesthetics with the Repertory Grid Technique -- Storyline Visualizations with Ubiquitous Actors -- Drawing Shortest Paths in Geodetic Graphs -- Limiting Crossing Numbers for Geodesic Drawings on the Sphere -- Crossings, k-planar graphs -- Crossings between non-homotopic edges -- Improvement on the crossing number of crossing-critical graphs -- On the Maximum Number of Crossings in Star-Simple Drawings of K n with No Empty Lens -- Simple Topological Drawings of k-Planar Graphs -- 2-Layer k-Planar Graphs: Density, Crossing Lemma, Relationships, and Pathwidth -- Planarity -- Planar Rectilinear Drawings of Outerplanar Graphs in Linear Time -- Rectilinear Planarity Testing of Plane Series-Parallel Graphs in Linear Time -- New Quality Metrics for Dynamic Graph Drawing -- The Turing Test for Graph Drawing Algorithms -- Plane Spanning Trees in Edge-Colored Simple Drawings of Kn -- Augmenting Geometric Graphs with Matchings -- Graph Drawing Contest -- Graph Drawing Contest Report.

This book constitutes the refereed proceedings of the 28th International Symposium on Graph Drawing and Network Visualization, GD 2020, which was held during September 16-18, 2020. The conference was planned to take place in Vancouver, Canada, but changed to an online format due to the COVID-19 pandemic. The 29 full and 9 short papers presented in this volume were carefully reviewed and selected from 82 submissions. They were organized in topical sections named: gradient descent and queue layouts; drawing tree-like graphs, visualization, and special drawings of elementary graphs; restricted drawings of special graph classes; orthogonality; topological constraints; crossings, k-planar graphs; planarity; graphs drawing contest.